Question

A particle is moving in a circular path of radius r. What would be the
displacement after (a) half a circle (b) after two complete rounds​

Answer 1

Answer:

a) circumference of the circle = 2πr

displacement covered by the particle = 2r ( diameter)

b) circumference of the circle= 2πr

displacement covered by the particle after 2 complete round = 0 (as the particle is on the starting point)