Question

Explain the meaning of uniform circular motion. Why is such a motion said to be accelerated?

Answer 1

When a particle moves with a constant speed in a circular path, its motion is said to be in uniform circular motion. In such a motion, the particle travels equal distance along the circular path in equal intervals of time.
The direction of motion of the particle changes at each point of circular path. The continuous change in the direction of motion implies that the velocity of the particle is non-uniform i.e., the motion is accelerated.

Example: The motion of the moon around the earth .