Question

Which of the following must be true about an object for it to be in uniform circular motion?

A.It must have zero centripetal acceleration.
B, It must have increasing centripetal acceleration.
c. It must be moving at a constant speed.
D. It must be moving with a constant velocity.

Answer 1

The simplest case of circular motion is uniform circular motion, where an object travels a circular path at a constant speed.

I'm pretty sure the answer is C.

Answer 2

c. It must be moving at a constant speed.

Step-by-step explanation:

c. It must be moving at a constant speed.

For body to be in uniform circular motion it must be moving with constant speed. This means its translation speed must remain the same. Never the less it is accelerating due to constant change in the direction of the motion. The direction of acceleration is always inward. IN uniform circular motion object always moves along the tangent to the circle.