Motion Graphs Physics 9 Unit 2 One Dimensional

Motion Graphs Physics 9 Unit 2: One Dimensional Motion

Position-Time Graphs n A motion with constant, ____ velocity results in a line of constant and positive ______ when plotted as a ______-time graph.

Position vs. Time Graphs n A motion with ____, positive velocity results in a line of changing and _______ when plotted as a _____ graph If the position-time

Position vs. Time Sketches Positive Velocity _______Velocity Positive Velocity Changing Velocity (acceleration)

Slope The _____of the line on a position-time graph reveals useful information about the velocity of the object. n It's often said, "As the slope goes, so goes the _____. " n Whatever ______ the velocity has, the slope will exhibit the ____(and vice versa). If the velocity is ____, then the slope is constant (i. e. , a straight line). If the velocity is changing, then the slope is changing (i. e. , a curved line). If the velocity is ____, then the slope is positive (i. e. , moving upwards and to the right).

Check out the slopes! Slow, Rightward (+) Constant Velocity Fast, _____ Constant Velocity

Negative Velocity? Velocity is _______ when the direction changes!! When an object slows down, it’s just a smaller ______. Slow, Leftward (–) Constant Velocity Fast, Leftward (–) Constant ______ n

Position vs. Time at Rest n _____ line indicates an object is at _____.

Overlapping Graphs

Principle of Slope n The _______ of slope: This principle states that the slope of the line on a position-time graph is _____ to the velocity of the object. n Make sure to pick 2 points

Try this! Velocity =?

Answer n____ m/s! n. Make sure to pick 2 points, the object did not start at 0.

Velocity - Time Graphs A constant, positive velocity results in a line of zero slope. n Velocity = ____

n With changing, positive _______ results in a _____ when plotted as a velocitytime graph. (Acceleration) If the velocity-time data

In conclusion… Positive Velocity Zero Acceleration Positive Velocity Positive Acceleration

Positive and Negative Slope ____ Direction ____

Describe this motion to the person sitting on your left.

Principle of Slope n The slope of the line on a velocity vs. time graph is equal to the _______ of the object. Acceleration = ___m/s 2

n Describe the motion this graph represents to a friend or classmate.