Calculate Velocity speed Acceleration using a mathematical equation

Calculate Velocity (speed) & Acceleration using a mathematical equation.

Speed and Velocity have slightly different meanings. Speed is distance traveled per unit of time and Velocity is distance traveled per unit of time in a specific direction. Mathematically however they are calculated with the same equation: § Speed (cm/sec) = Distance (cm) ÷ Time (sec) § Velocity (cm/sec) = Distance (cm) ÷ Time (sec) with direction specified. Note: there are three versions of this equation, one for each component: velocity, distance, and time. The three versions are: Velocity = Distance/Time Distance = Velocity × Time = Distance/Velocity

§ Example: § What is the velocity (speed with direction) of an object that travels 3583. 0 km in 3. 5 hrs? § Velocity = Distance / Time § V = 3583. 0 km / 3. 5 hrs § V = 1023. 7 km/hr § For more examples visit: https: //www. youtube. com/watch? v=o. RKxm. Xw. Lv. UU

§ Acceleration is the change in velocity (or the change in speed and/or direction). § Speeding up & Slowing down is considered acceleration. § Note: Speeding Up is Positive Acceleration. Slowing Down is Negative Acceleration (also called deceleration) § Changing direction is considered acceleration. § These two changes (speed up/down & direction) can happen independently or simultaneously. Acceleration is calculated with the following formula: Acceleration = (Final Velocity – Beginning Velocity) / Time

§ A roller-coaster car accelerates from 2. 4 m/sec at the top of a hill to 13. 2 m/sec at the bottom of the hill. The car took 3. 6 seconds go from the top to the bottom. What is the acceleration of the roller-coaster car? § Acceleration = (Final Velocity – Initial Velocity) / Time § A = (13. 2 m/sec – 2. 4 m/sec) / 3. 6 seconds § A = 3 m/sec For more acceleration examples visit the following website: https: //www. youtube. com/watch? v=FOk. Qszg 1 -j 8