What is the SI Unit of Velocity?

The SI unit of velocity is metres per second (m/s), representing the rate of change of position of an object with respect to time. Velocity measures both the speed and direction of motion. Velocity is calculated by dividing the displacement (change in position) by the time taken.

Velocity can also be expressed in centimetres per second (cm/s or cms^-1).

Velocity is different from speed, which is the rate of change of distance travelled by a body. Velocity is a vector quantity, meaning it includes both magnitude (speed) and direction.

The mathematical formula for velocity is:

v = displacement/time