Question

When a body performs a U.C.M.( uniform circular motion) it has_______

(a) a constant velocity

(b) a constant acceleration

(c) an acceleration of constant magnitude but variable

direction

(d) an acceleration, which changes with time​

Answer 1

Answer:

Accelerating objects are objects which are changing their velocity - either the speed (i.e., magnitude of the velocity vector) or the direction. An object undergoing uniform circular motion is moving with a constant speed. Nonetheless, it is accelerating due to its change in direction.