Question

Distinguish between speed and velocity.

Answer 1

	Speed	Velocity
1.	Speed is simply the rate of change of motion. or simply, it is the distance travelled by a body in a unit of time.	Velocity is direction-aware, and it is the rate of change of position of an object.
2.	Speed is a scalar quantity, i.e. it has only magnitude.	Velocity is a vector quantity, i.e. it has both magnitude and direction.
3.	Speed measures the distance travelled (d) over the change in time (Δt).	Velocity measures displacement (or change in position, Δs) over the change in time (Δt).
4.	Speed = `"Distance"/"time"` = dt	Velocity = `"Displacement"/"Time"` = st
5.	Speed ascertains how fast a body moves.	Velocity ascertains the object's speed and the direction it takes while moving.
6.	Example: A person is making a roundabout journey at a speed of 30 mph.	Example: A woman plans to drive her car at 56 mph in East Mumbai.