Thursday, September 23, 2010

Acceleration

Acceleration is the change velocity over a period of time.

For instance, when a car is at rest and the driver presses the pedal, the car accelerates forward -- it's velocity has changed from 0 to however many miles per hour in whatever direction he is headed. Every time that car makes even the slightest of turns, stops, or reverses, its velocity has changed, and, therefore, it has accelerated (or negatively accelerated, in the case of going backwards or stopping).


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