Velocity is defined as the rate of change of position with respect to time. Velocity is a vector quantity. |

Velocity has both magnitude as well as direction. For example, **1** 2 km/s towards east, **2** 4 m/s towards London from Liverpool

Velocity can also be defined as rate of change of displacement.

## Average Velocity

Choosing one dimensional motion as a starting point to understand

The constant velocity that would provide the same resultant displacement(Δ*x*) as a variable velocity in the same time interval(Δ*t*.

- Mathematically, .

The bar over the *v* indicates average.