Question

a body travels along a circular path of radius 70 m after travelling half a revolution in 20s find the
1] average velocity
2] average speed

Answer 1

The radius of the circular path is r=70m.

The body travels half the circumference.

So, distance covered by the body is d=22/7×70

=220m

Also,the displacement of the body is s=2d=2×70

=140m

So, Average velocity=s/t=140/20=7 m/s

And,Average speed=d/t=220/20=11 m/s