Question

A particle is moving in a circle with uniform speed. It has:

• A. constant kinetic energy
• B. constant acceleration
• C. constant velocity
• D. constant displacement

Answer 1

Answer: (A), (B)

The correct options are
A constant kinetic energy
B constant acceleration

As the speed$\left(v\right)$ is constant so the $KE=\frac{1}{2}m{v}^2$ will also be $constant$

and the acceleration will also be $only$ $centripetal$

which will also be $constant$ as $a=\frac{v^2}{r}$, $r$ is radius of the circle.

velocity will $vary$ as the path is $not$ $linear$ thus $displacement.$