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Describing Motion. E. A change in velocity divided by the amount of time over which the change occurs is acceleration 1. the change in velocity can be due to a change in speed, a change in direction or both. 2. when velocity is changing → an object is accelerating. Acceleration a. Units.
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Describing Motion E. A change in velocity divided by the amount of time over which the change occurs is acceleration 1. the change in velocity can be due to a change in speed, a change in direction or both. 2. when velocity is changing → an object is accelerating
Acceleration a Units m/s2 cm/s2 mile/s2 km/s2 mile/hour/s km/hour/s Formula • a= (vffinal - Viinitial) (tffinal - tiinitial) The final speed MINUS the beginning speed DIVIDED BY The final time MINUS the beginning time