A particle is moving along a circular path of radius r, when it makes half a rotation, what is the ratio between its displacement and distance?

(a) 2π
(b) π
(c) π/2
(d) π/4

2 answers

2r/πr = 2/π

π/2 is the ratio between its distance traveled (πr) and its displacement (2r).
how we get displacement and distance