Question

A body performing uniform circular motion has constant ______.

Options

• velocity

• kinetic energy

• displacement

• acceleration

Answer 1

A body performing uniform circular motion has constant kinetic energy.

Explanation:

In uniform circular motion, the speed of the body remains constant, although the direction of motion continuously changes.

Kinetic energy (K.E.) depends on the magnitude of velocity, not its direction.

K.E. = `1/2 mv^2`

Since speed v and mass m remain constant, the kinetic energy stays constant.