Give SI unit of speed and velocity.

Speed:

1. Speed is a scalar quantity that refers to "how fast an object is moving."
2. Speed can be thought of as the rate at which an object covers distance.
3. SI unit of speed is metre per second( $m/sorm{s}^{-1}$).

Velocity:

1. Velocity is a vector quantity that refers to "the rate at which an object changes its position."
2. SI unit of velocity is metre per second ( $m/sorm{s}^{-1}$).
3. Mathematically it is given as,

$Velocity=\frac{Totaldisplacement}{Totaltimetaken}$