**Define acceleration? **

Difficulty: Medium

**Acceleration:**

Acceleration is defined as the rate of change of velocity of a body.

Acceleration= $\frac{Change \: in \; Velocity}{Time \; Taken}$

Acceleration= $\frac{Final Velocity \: - \; Initial Velocity}{Time \: Taken}$

a= $\frac{Vf \: - \: Vi }{T}$

**Unit of acceleration:**

** **SI unit of acceleration is metre per second squared (ms^{-2})

**USEFUL INFORMATION**

Acceleration of a moving object is in the direction of the velocity of its velocity is increasing. Acceleration of the object is opposite to the direction of velocity if its velocity is decreasing.

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