Write the relation between speed and the magnitude of velocity.

(N/A) The speed of an object is defined as the total distance traveled divided by the total time taken,while the magnitude of velocity is defined as the magnitude of the displacement divided by the total time taken.
Since the distance traveled is always greater than or equal to the magnitude of the displacement $(Distance \ge |Displacement|)$,it follows that the speed is always greater than or equal to the magnitude of the velocity.
Mathematically,this is expressed as: $\text{Speed} \ge |\text{Velocity}|$.
Equality holds true only when the object moves in a straight line without changing its direction.