Which force is responsible for the movement of stone away from the centre when it is tied to a thread and swirled?

Which of the following statements are correct in context of an object moving in uniform circular motion?

A. The direction of the motion changes at every point while moving in the circular path.

B. The motion of the object is an example of an accelerated motion.

In a _____ the size of the velocity vector changes, denoting a change in the magnitude of velocity.