Question

What happens to a body undergoing a uniform circular motion?

• A. Its speed changes but velocity remains the same.
• B. Its velocity changes but speed remains the same.
• C. Both speed and velocity changes.
• D. Both speed and velocity do not change.

Answer 1

The correct option is B Its velocity changes but speed remains the same.

In uniform circular motion the speed is constant. However, since it is moving in a circle, the direction of motion continuously changes.
Hence, its velocity changes but speed remains constant.