Question

A car moving along a circular path of radius 140 m, completes one round in 20 seconds what is the speed of the car the displacement of the car

Answer 1

Speed of a car in circular motion=2$\pi$radius/time.
=2*22/7*140/20.=44 m/s.
Speed=distance/time.
44=distance/20.
44*20= distance.
880 m = distance.

Displacement is 0 as direction is constantly changing.