Question

An athlete completes one round of a circular track of radius 2m in 40 sec. Find his displacement at
the end of 2 min. 20 sec.

Answer 1

2min 20 sec = 140 sec

Since it is a circular track, the displacement will be zero after each 40 seconds.

(140 - 120)seconds

= 20 seconds

Therefore displacement at 2 min 20 seconds will be, 1 metre