Question

A particle moving in uniform circular motion has uniform speed but not constant speed. Explain.​

Answer 1

Answer:

An object moving in uniform circular motion is moving around the perimeter of the circle with a constant speed. While the speed of the object is constant, its velocity is changing. Velocity, being a vector, has a constant magnitude but a changing direction.

Answer 2

A particle moving in circular motion has uniform speed but not uniform velocity, because the direction of motion does not remains constant, it is a tangent drawn to the circular path,

Velocity is a vector and hence direction of motion is taken into account, velocity is constant if a particle moves with contant speed in same direction,

In this case the body is accelerated as direction varies at any point of circular path.

Hope it helps pal...