Mark the correct statements `(s)`.

Options

A. if speed of a body is varying, its velocity must be varying and it must have zero acceleration
B. if velocity of a body is varying, its speed must be varying
C. a body moving with varying velocity may have a constant speed
D. a body moving with varying speed may have constant velocity if its direction of motion remains constant.

Answer

C

Explanation

If speed of a particle changes, the velocity of the particle definitely changes and hence the acceleration of the particle is nonzero.
Velocity of a particle change without change in speed.
When speed of a particle varies, its velocity cannot be constant.