Question

In a uniform circular motion, which of the following is true?

• A. Velocity is constant and speed is changing.
• B. Velocity and speed both remain constant.
• C. Speed remains constant and velocity changes continuously.
• D. Neither velocity nor speed remains constant.

Answer 1

The correct option is C

Speed remains constant and velocity changes continuously.

In a uniform circular motion, the speed remains constant. However, the direction of the body keeps changing. This is due to an acceleration that is perpendicular to the direction of velocity at every point. Hence, the velocity does not remain constant.