Question

A body complete one circle in 20secs.what is the displacement of the body after 45 secs

Answer 1

your answer is 2.25 hope this helps you

Answer 2

See i am not telling the answer but i will tell u a trick to make to image the problem better. See its said that a body cover a complete circle after 20 sec. That means it has completed one round and returned to its initial point therefore the displacement covered by the body at one complete rotation is 0.