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acceleration

ac·cel·er·a·tion [ ak sèllə ráysh'n ] (plural ac·cel·er·a·tions)


noun 
Definition:
 
1. increase in speed: the rate at which something increases in velocity

2. increase in rate of progress: an increase in the rate at which something happens or develops

3. act of accelerating: the act of accelerating, or the process of being accelerated

4. physics measure of increase in velocity: a measure of the rate of increase in the velocity of something per unit of time.
Symbol  a


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