Question

Assertion (A) Linear momentum of a body changes even when it is moving uniformly in a circle.
Reason (R) In uniform circular motion velocity remains constant.

• A. Both assertion and reason are true and reason is the correct explanation of assertion
• B. Both assertion and reason are true but reason is not the correct explanation of assertion
• C. Assertion is true but reason is false
• D. Both assertion and reason are false

Answer 1

Answer: (A)

In uniform circular motion, the direction of motion changes, continously therefore velocity changes. As $P=m v$ therefore momentum of a body also changes in uniform circular motion.