Speed and Velocity speed constant speed instantaneous speed
![Speed and Velocity • speed • constant speed • instantaneous speed • average speed Speed and Velocity • speed • constant speed • instantaneous speed • average speed](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-1.jpg)
![What is speed? Speed is a measure of the distance an object travels in What is speed? Speed is a measure of the distance an object travels in](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-2.jpg)
![What is speed? (cont. ) You can calculate speed by dividing the distance traveled What is speed? (cont. ) You can calculate speed by dividing the distance traveled](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-3.jpg)
![What is speed? (cont. ) Constant speed is the rate of change of position What is speed? (cont. ) Constant speed is the rate of change of position](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-4.jpg)
![What is speed? (cont. ) When the car’s speed changes, it moves a different What is speed? (cont. ) When the car’s speed changes, it moves a different](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-5.jpg)
![What is speed? (cont. ) • Instantaneous speed is speed at a specific instant What is speed? (cont. ) • Instantaneous speed is speed at a specific instant](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-6.jpg)
![Distance-Time Graphs • Graphs that show comparisons between distance and time are called distance-time Distance-Time Graphs • Graphs that show comparisons between distance and time are called distance-time](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-7.jpg)
![Distance-Time Graphs (cont. ) • You can use distance-time graphs to compare the motion Distance-Time Graphs (cont. ) • You can use distance-time graphs to compare the motion](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-8.jpg)
![You can use distance-time graphs to calculate the average speed of an object. You can use distance-time graphs to calculate the average speed of an object.](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-9.jpg)
![Distance-Time Graphs (cont. ) How can you use a distancetime graph to calculate average Distance-Time Graphs (cont. ) How can you use a distancetime graph to calculate average](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-10.jpg)
![Distance-Time Graphs (cont. ) If the speed of an object changes instead of being Distance-Time Graphs (cont. ) If the speed of an object changes instead of being](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-11.jpg)
![Velocity is the speed and the direction of a moving object. velocity from Latin Velocity is the speed and the direction of a moving object. velocity from Latin](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-12.jpg)
![Velocity (cont. ) • The velocity of an object can be represented by an Velocity (cont. ) • The velocity of an object can be represented by an](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-13.jpg)
![Velocity (cont. ) Velocity changes when the speed of an object changes, when the Velocity (cont. ) Velocity changes when the speed of an object changes, when the](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-14.jpg)
![Velocity (cont. ) How can velocity change? Velocity (cont. ) How can velocity change?](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-15.jpg)
![• Speed is a measure of the distance an object travels in a • Speed is a measure of the distance an object travels in a](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-16.jpg)
![• Velocity includes both the speed and the direction of motion. • Velocity includes both the speed and the direction of motion.](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-17.jpg)
![The total distance traveled divided by the total time taken to travel that distance The total distance traveled divided by the total time taken to travel that distance](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-18.jpg)
![Units of speed are units of distance divided by which of these? A. units Units of speed are units of distance divided by which of these? A. units](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-19.jpg)
![How is constant speed represented on a distance-time graph? A. a wavy line B. How is constant speed represented on a distance-time graph? A. a wavy line B.](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-20.jpg)
![Do you agree or disagree? 3. Constant speed is the same thing as average Do you agree or disagree? 3. Constant speed is the same thing as average](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-21.jpg)
![Acceleration • What are three ways an object can accelerate? • What does a Acceleration • What are three ways an object can accelerate? • What does a](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-22.jpg)
![Acceleration • acceleration Acceleration • acceleration](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-23.jpg)
![Acceleration—Changes in Velocity • Acceleration is a measure of how much the velocity of Acceleration—Changes in Velocity • Acceleration is a measure of how much the velocity of](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-24.jpg)
![Acceleration—Changes in Velocity (cont. ) Acceleration has a direction and can be represented by Acceleration—Changes in Velocity (cont. ) Acceleration has a direction and can be represented by](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-25.jpg)
![Acceleration—Changes in Velocity (cont. ) What are three ways an object can accelerate? Acceleration—Changes in Velocity (cont. ) What are three ways an object can accelerate?](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-26.jpg)
![Calculating Acceleration is a change in velocity during a time interval divided by the Calculating Acceleration is a change in velocity during a time interval divided by the](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-27.jpg)
![Calculating Acceleration (cont. ) Acceleration is in the direction of motion if it is Calculating Acceleration (cont. ) Acceleration is in the direction of motion if it is](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-28.jpg)
![Speed-Time Graphs • A speed-time graph shows how speed changes over time. • A Speed-Time Graphs • A speed-time graph shows how speed changes over time. • A](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-29.jpg)
![Speed-Time Graphs (cont. ) horizontal from Greek horizein, means “limit, divide, separate” vertical from Speed-Time Graphs (cont. ) horizontal from Greek horizein, means “limit, divide, separate” vertical from](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-30.jpg)
![Speed-Time Graphs (cont. ) An object at rest is not moving, so its speed Speed-Time Graphs (cont. ) An object at rest is not moving, so its speed](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-31.jpg)
![Speed-Time Graphs (cont. ) For an object moving at constant speed, the speed-time graph Speed-Time Graphs (cont. ) For an object moving at constant speed, the speed-time graph](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-32.jpg)
![Speed-Time Graphs (cont. ) The line on the speed-time graph for an object that Speed-Time Graphs (cont. ) The line on the speed-time graph for an object that](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-33.jpg)
![Speed-Time Graphs (cont. ) The line on the speed-time graph for an object that Speed-Time Graphs (cont. ) The line on the speed-time graph for an object that](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-34.jpg)
![Speed-Time Graphs (cont. ) What does a speed-time graph show about the motion of Speed-Time Graphs (cont. ) What does a speed-time graph show about the motion of](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-35.jpg)
![Summarizing Motion • There are several ways to describe motion. • You can describe Summarizing Motion • There are several ways to describe motion. • You can describe](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-36.jpg)
![• An object accelerates if it speeds up, slows down, or changes direction. • An object accelerates if it speeds up, slows down, or changes direction.](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-37.jpg)
![• Acceleration in a straight line can be calculated by dividing the change • Acceleration in a straight line can be calculated by dividing the change](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-38.jpg)
![• A speed-time graph shows how an object’s speed changes over time. • A speed-time graph shows how an object’s speed changes over time.](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-39.jpg)
![An objects accelerates when its velocity changes as a result of which of these? An objects accelerates when its velocity changes as a result of which of these?](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-40.jpg)
![On a speed-time graph, where is time located? A. the horizontal axis (the x-axis) On a speed-time graph, where is time located? A. the horizontal axis (the x-axis)](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-41.jpg)
![Which of these refers to a change in velocity during a time interval divided Which of these refers to a change in velocity during a time interval divided](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-42.jpg)
![Do you agree or disagree? 5. You can calculate acceleration by dividing the change Do you agree or disagree? 5. You can calculate acceleration by dividing the change](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-43.jpg)
![Key Concept Summary Interactive Concept Map Chapter Review Standardized Test Practice Key Concept Summary Interactive Concept Map Chapter Review Standardized Test Practice](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-44.jpg)
![The motion of an object can be described by the object’s position, velocity, and The motion of an object can be described by the object’s position, velocity, and](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-45.jpg)
![Lesson 1: Position and Motion • An object’s position is its distance in a Lesson 1: Position and Motion • An object’s position is its distance in a](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-46.jpg)
![Lesson 2: Speed and Velocity • Speed is the distance an object moves in Lesson 2: Speed and Velocity • Speed is the distance an object moves in](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-47.jpg)
![Lesson 3: Acceleration • Acceleration is a change in velocity over time. An object Lesson 3: Acceleration • Acceleration is a change in velocity over time. An object](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-48.jpg)
![Which of the below can be illustrated with a distance-time graph? A. comparisons between Which of the below can be illustrated with a distance-time graph? A. comparisons between](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-49.jpg)
![If acceleration is in the direction of motion, which of these is true? A. If acceleration is in the direction of motion, which of these is true? A.](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-50.jpg)
![Where is speed located on a speed-time graph? A. the horizontal axis (the x-axis) Where is speed located on a speed-time graph? A. the horizontal axis (the x-axis)](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-51.jpg)
![When you describe an object’s position, the opposite direction is which of these? A. When you describe an object’s position, the opposite direction is which of these? A.](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-52.jpg)
![Which term refers to the process of changing position? A. displacement B. reference point Which term refers to the process of changing position? A. displacement B. reference point](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-53.jpg)
![Which of these describes the speed and the direction of a moving object? A. Which of these describes the speed and the direction of a moving object? A.](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-54.jpg)
![Which of these results in a change of velocity? A. the speed of an Which of these results in a change of velocity? A. the speed of an](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-55.jpg)
![Which term refers to a measure of how much the velocity of an object Which term refers to a measure of how much the velocity of an object](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-56.jpg)
- Slides: 56
![Speed and Velocity speed constant speed instantaneous speed average speed Speed and Velocity • speed • constant speed • instantaneous speed • average speed](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-1.jpg)
Speed and Velocity • speed • constant speed • instantaneous speed • average speed • velocity
![What is speed Speed is a measure of the distance an object travels in What is speed? Speed is a measure of the distance an object travels in](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-2.jpg)
What is speed? Speed is a measure of the distance an object travels in a unit of time. What is speed?
![What is speed cont You can calculate speed by dividing the distance traveled What is speed? (cont. ) You can calculate speed by dividing the distance traveled](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-3.jpg)
What is speed? (cont. ) You can calculate speed by dividing the distance traveled by the time it takes to go that distance.
![What is speed cont Constant speed is the rate of change of position What is speed? (cont. ) Constant speed is the rate of change of position](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-4.jpg)
What is speed? (cont. ) Constant speed is the rate of change of position in which the same distance is traveled each second.
![What is speed cont When the cars speed changes it moves a different What is speed? (cont. ) When the car’s speed changes, it moves a different](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-5.jpg)
What is speed? (cont. ) When the car’s speed changes, it moves a different distance each period of time.
![What is speed cont Instantaneous speed is speed at a specific instant What is speed? (cont. ) • Instantaneous speed is speed at a specific instant](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-6.jpg)
What is speed? (cont. ) • Instantaneous speed is speed at a specific instant in time. • Average speed is the total distance traveled divided by the total time taken to travel that distance.
![DistanceTime Graphs Graphs that show comparisons between distance and time are called distancetime Distance-Time Graphs • Graphs that show comparisons between distance and time are called distance-time](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-7.jpg)
Distance-Time Graphs • Graphs that show comparisons between distance and time are called distance-time graphs. • Constant speed is shown as a straight line on a distancetime graph.
![DistanceTime Graphs cont You can use distancetime graphs to compare the motion Distance-Time Graphs (cont. ) • You can use distance-time graphs to compare the motion](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-8.jpg)
Distance-Time Graphs (cont. ) • You can use distance-time graphs to compare the motion of two different objects. • The steeper line indicates a faster speed.
![You can use distancetime graphs to calculate the average speed of an object You can use distance-time graphs to calculate the average speed of an object.](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-9.jpg)
You can use distance-time graphs to calculate the average speed of an object.
![DistanceTime Graphs cont How can you use a distancetime graph to calculate average Distance-Time Graphs (cont. ) How can you use a distancetime graph to calculate average](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-10.jpg)
Distance-Time Graphs (cont. ) How can you use a distancetime graph to calculate average speed?
![DistanceTime Graphs cont If the speed of an object changes instead of being Distance-Time Graphs (cont. ) If the speed of an object changes instead of being](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-11.jpg)
Distance-Time Graphs (cont. ) If the speed of an object changes instead of being constant, its motion on a distance-time graph is a curved line.
![Velocity is the speed and the direction of a moving object velocity from Latin Velocity is the speed and the direction of a moving object. velocity from Latin](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-12.jpg)
Velocity is the speed and the direction of a moving object. velocity from Latin velocitas, means “swiftness, speed”
![Velocity cont The velocity of an object can be represented by an Velocity (cont. ) • The velocity of an object can be represented by an](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-13.jpg)
Velocity (cont. ) • The velocity of an object can be represented by an arrow. • A greater speed is shown by a longer arrow. • The arrow points in the direction of the object’s movement.
![Velocity cont Velocity changes when the speed of an object changes when the Velocity (cont. ) Velocity changes when the speed of an object changes, when the](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-14.jpg)
Velocity (cont. ) Velocity changes when the speed of an object changes, when the direction that the object moves changes, or when both the speed and the direction change.
![Velocity cont How can velocity change Velocity (cont. ) How can velocity change?](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-15.jpg)
Velocity (cont. ) How can velocity change?
![Speed is a measure of the distance an object travels in a • Speed is a measure of the distance an object travels in a](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-16.jpg)
• Speed is a measure of the distance an object travels in a unit of time. You can describe an object’s constant speed, instantaneous speed, or average speed. • A distance-time graph shows the speed of an object.
![Velocity includes both the speed and the direction of motion • Velocity includes both the speed and the direction of motion.](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-17.jpg)
• Velocity includes both the speed and the direction of motion.
![The total distance traveled divided by the total time taken to travel that distance The total distance traveled divided by the total time taken to travel that distance](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-18.jpg)
The total distance traveled divided by the total time taken to travel that distance is known as which of these? A. speed B. constant speed C. instantaneous speed D. average speed
![Units of speed are units of distance divided by which of these A units Units of speed are units of distance divided by which of these? A. units](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-19.jpg)
Units of speed are units of distance divided by which of these? A. units of speed B. constant speed C. units of time D. average speed
![How is constant speed represented on a distancetime graph A a wavy line B How is constant speed represented on a distance-time graph? A. a wavy line B.](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-20.jpg)
How is constant speed represented on a distance-time graph? A. a wavy line B. a crooked line C. a straight line D. a curved line
![Do you agree or disagree 3 Constant speed is the same thing as average Do you agree or disagree? 3. Constant speed is the same thing as average](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-21.jpg)
Do you agree or disagree? 3. Constant speed is the same thing as average speed. 4. Velocity is another name for speed.
![Acceleration What are three ways an object can accelerate What does a Acceleration • What are three ways an object can accelerate? • What does a](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-22.jpg)
Acceleration • What are three ways an object can accelerate? • What does a speed-time graph indicate about an object’s motion?
![Acceleration acceleration Acceleration • acceleration](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-23.jpg)
Acceleration • acceleration
![AccelerationChanges in Velocity Acceleration is a measure of how much the velocity of Acceleration—Changes in Velocity • Acceleration is a measure of how much the velocity of](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-24.jpg)
Acceleration—Changes in Velocity • Acceleration is a measure of how much the velocity of an object changes in a unit of time. • An object accelerates when its velocity changes as a result of increasing speed, decreasing speed, or a change in direction.
![AccelerationChanges in Velocity cont Acceleration has a direction and can be represented by Acceleration—Changes in Velocity (cont. ) Acceleration has a direction and can be represented by](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-25.jpg)
Acceleration—Changes in Velocity (cont. ) Acceleration has a direction and can be represented by an arrow.
![AccelerationChanges in Velocity cont What are three ways an object can accelerate Acceleration—Changes in Velocity (cont. ) What are three ways an object can accelerate?](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-26.jpg)
Acceleration—Changes in Velocity (cont. ) What are three ways an object can accelerate?
![Calculating Acceleration is a change in velocity during a time interval divided by the Calculating Acceleration is a change in velocity during a time interval divided by the](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-27.jpg)
Calculating Acceleration is a change in velocity during a time interval divided by the time interval during which the velocity changes.
![Calculating Acceleration cont Acceleration is in the direction of motion if it is Calculating Acceleration (cont. ) Acceleration is in the direction of motion if it is](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-28.jpg)
Calculating Acceleration (cont. ) Acceleration is in the direction of motion if it is positive and opposite the direction of motion if it is negative.
![SpeedTime Graphs A speedtime graph shows how speed changes over time A Speed-Time Graphs • A speed-time graph shows how speed changes over time. • A](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-29.jpg)
Speed-Time Graphs • A speed-time graph shows how speed changes over time. • A speed-time graph has time on the horizontal axis—the x-axis, and speed on the vertical axis—the y axis.
![SpeedTime Graphs cont horizontal from Greek horizein means limit divide separate vertical from Speed-Time Graphs (cont. ) horizontal from Greek horizein, means “limit, divide, separate” vertical from](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-30.jpg)
Speed-Time Graphs (cont. ) horizontal from Greek horizein, means “limit, divide, separate” vertical from Latin verticalis, means “overhead”
![SpeedTime Graphs cont An object at rest is not moving so its speed Speed-Time Graphs (cont. ) An object at rest is not moving, so its speed](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-31.jpg)
Speed-Time Graphs (cont. ) An object at rest is not moving, so its speed is always zero.
![SpeedTime Graphs cont For an object moving at constant speed the speedtime graph Speed-Time Graphs (cont. ) For an object moving at constant speed, the speed-time graph](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-32.jpg)
Speed-Time Graphs (cont. ) For an object moving at constant speed, the speed-time graph is a horizontal line.
![SpeedTime Graphs cont The line on the speedtime graph for an object that Speed-Time Graphs (cont. ) The line on the speed-time graph for an object that](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-33.jpg)
Speed-Time Graphs (cont. ) The line on the speed-time graph for an object that is speeding up has an upward slope.
![SpeedTime Graphs cont The line on the speedtime graph for an object that Speed-Time Graphs (cont. ) The line on the speed-time graph for an object that](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-34.jpg)
Speed-Time Graphs (cont. ) The line on the speed-time graph for an object that is slowing down has a downward slope.
![SpeedTime Graphs cont What does a speedtime graph show about the motion of Speed-Time Graphs (cont. ) What does a speed-time graph show about the motion of](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-35.jpg)
Speed-Time Graphs (cont. ) What does a speed-time graph show about the motion of an object?
![Summarizing Motion There are several ways to describe motion You can describe Summarizing Motion • There are several ways to describe motion. • You can describe](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-36.jpg)
Summarizing Motion • There are several ways to describe motion. • You can describe position by direction and distance from a reference point. • You can compare distance and displacement to find average speed. • You can describe velocity by speed and direction.
![An object accelerates if it speeds up slows down or changes direction • An object accelerates if it speeds up, slows down, or changes direction.](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-37.jpg)
• An object accelerates if it speeds up, slows down, or changes direction.
![Acceleration in a straight line can be calculated by dividing the change • Acceleration in a straight line can be calculated by dividing the change](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-38.jpg)
• Acceleration in a straight line can be calculated by dividing the change in speed by the change in time.
![A speedtime graph shows how an objects speed changes over time • A speed-time graph shows how an object’s speed changes over time.](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-39.jpg)
• A speed-time graph shows how an object’s speed changes over time.
![An objects accelerates when its velocity changes as a result of which of these An objects accelerates when its velocity changes as a result of which of these?](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-40.jpg)
An objects accelerates when its velocity changes as a result of which of these? A. increasing speed B. decreasing speed C. a change in direction D. all of the above
![On a speedtime graph where is time located A the horizontal axis the xaxis On a speed-time graph, where is time located? A. the horizontal axis (the x-axis)](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-41.jpg)
On a speed-time graph, where is time located? A. the horizontal axis (the x-axis) B. the vertical axis (the y-axis) C. both of these D. neither of these
![Which of these refers to a change in velocity during a time interval divided Which of these refers to a change in velocity during a time interval divided](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-42.jpg)
Which of these refers to a change in velocity during a time interval divided by the time interval during which the velocity changes? A. acceleration B. speed C. velocity D. none of these
![Do you agree or disagree 5 You can calculate acceleration by dividing the change Do you agree or disagree? 5. You can calculate acceleration by dividing the change](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-43.jpg)
Do you agree or disagree? 5. You can calculate acceleration by dividing the change in velocity by the change in distance. 6. An object accelerates when either its speed or its direction changes.
![Key Concept Summary Interactive Concept Map Chapter Review Standardized Test Practice Key Concept Summary Interactive Concept Map Chapter Review Standardized Test Practice](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-44.jpg)
Key Concept Summary Interactive Concept Map Chapter Review Standardized Test Practice
![The motion of an object can be described by the objects position velocity and The motion of an object can be described by the object’s position, velocity, and](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-45.jpg)
The motion of an object can be described by the object’s position, velocity, and acceleration.
![Lesson 1 Position and Motion An objects position is its distance in a Lesson 1: Position and Motion • An object’s position is its distance in a](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-46.jpg)
Lesson 1: Position and Motion • An object’s position is its distance in a certain direction from a reference point. • The position of an object in two dimensions can be described by choosing a reference point and two reference directions, and then stating the distance along each reference direction. • The distance an object moves is the actual length of its path. Its displacement is the difference its initial position and its final position.
![Lesson 2 Speed and Velocity Speed is the distance an object moves in Lesson 2: Speed and Velocity • Speed is the distance an object moves in](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-47.jpg)
Lesson 2: Speed and Velocity • Speed is the distance an object moves in a unit of time. • An object moving the same distance each second is moving at a constant speed. The speed of an object at a certain moment is its instantaneous speed. • You can calculate an object’s average speed from a distance-time graph by dividing the distance the object travels by the total time it takes to travel that distance. • Velocity changes when speed, direction, or both speed and direction change.
![Lesson 3 Acceleration Acceleration is a change in velocity over time An object Lesson 3: Acceleration • Acceleration is a change in velocity over time. An object](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-48.jpg)
Lesson 3: Acceleration • Acceleration is a change in velocity over time. An object accelerates when it speeds up, slows down, or changes direction. • A speed-time graph shows the relationship between speed and time and can be used to determine information about the acceleration of an object.
![Which of the below can be illustrated with a distancetime graph A comparisons between Which of the below can be illustrated with a distance-time graph? A. comparisons between](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-49.jpg)
Which of the below can be illustrated with a distance-time graph? A. comparisons between the motion of two objects B. the average speed of an object C. comparisons between distance and time D. all of the above
![If acceleration is in the direction of motion which of these is true A If acceleration is in the direction of motion, which of these is true? A.](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-50.jpg)
If acceleration is in the direction of motion, which of these is true? A. It is positive. B. It is negative. C. The object is at rest. D. The speed-time graph has a downward slope.
![Where is speed located on a speedtime graph A the horizontal axis the xaxis Where is speed located on a speed-time graph? A. the horizontal axis (the x-axis)](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-51.jpg)
Where is speed located on a speed-time graph? A. the horizontal axis (the x-axis) B. the vertical axis (the y-axis) C. Speed is not indicated on a speed -time graph. D. The speed is the slope of the line.
![When you describe an objects position the opposite direction is which of these A When you describe an object’s position, the opposite direction is which of these? A.](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-52.jpg)
When you describe an object’s position, the opposite direction is which of these? A. the positive direction B. the negative direction C. the reference direction D. none of these
![Which term refers to the process of changing position A displacement B reference point Which term refers to the process of changing position? A. displacement B. reference point](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-53.jpg)
Which term refers to the process of changing position? A. displacement B. reference point C. motion D. velocity
![Which of these describes the speed and the direction of a moving object A Which of these describes the speed and the direction of a moving object? A.](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-54.jpg)
Which of these describes the speed and the direction of a moving object? A. velocity B. constant speed C. average speed D. instantaneous speed
![Which of these results in a change of velocity A the speed of an Which of these results in a change of velocity? A. the speed of an](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-55.jpg)
Which of these results in a change of velocity? A. the speed of an object changes B. the direction an object moves changes C. both the speed and direction of an object changes D. all of the above
![Which term refers to a measure of how much the velocity of an object Which term refers to a measure of how much the velocity of an object](https://slidetodoc.com/presentation_image_h2/9109d2ecfaaeef2d8647ba8ea55cd65f/image-56.jpg)
Which term refers to a measure of how much the velocity of an object changes in a unit of time? A. direction B. speed C. acceleration D. velocity
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