# Acceleration

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**Acceleration** is the vector representing the change in velocity with respect to time. It is usually represented with **a**. Its SI unit is m/s^{2}.

The integral of acceleration with respect to time is velocity, and its second integral is position.

## Formulas Edit

The formula for average acceleration on a linear path is change in velocity divided by change in time, or

The instantaneous acceleration is equal to the derivative of velocity with respect to time.