Question

A body travels along a circular path of radius 70 m.After travelling half a revolution in 20 s find the ;
1.average velocity
2.average speed

Answer 1

The body changed position, from one side of the circle, to the other.

displacement=changeposition/time=2PIr/20

there has to be a direction associated with displacement, my drawing has it West.

average speed: distance/time=2PIr/20

average velocity: 2PIr/20 West

Answer 2

It's wrong