Question

A player completes circular path of radius r in 40sec .At the end of 2.M20sec the displacement will be

Answer 1

Explanation:

radius=r

length of track=2PIEr

time taken =40 s

if the person completes 1 round in 40 s, then displacement in 2min 20 s is:

2min 20 s=140/ 40= 3.5 rounds

in 3.5 round he reaches opposite to the point from which he startes

displacement = diameter = 2r