Question

In the case of uniform circular motion, which one of the following physical quantities does not remain constant?

• A. mass
• B. speed
• C. linear momentum
• D. kinetic energy

Answer 1

The correct option is C linear momentum

The linear momentum doesn't remain constant as momentum is $mass$ $\times$ $velocity$ and the direction of velocity keeps on changing.
Whereas mass, speed and kinetic energy remain constant over the uniform circular motion