Question

If a body moves in circular track of radius(r) = 7m in 7 sec. What will be it's average speed and velocity after 28 sec? ( please explain)

Answer 1

Answer:

given that,

r=7m,t=7s

total time =28s

2pir= 2×22/7×7

=2×22

=44m

average speeg=total distance/total time

average velocity=total displacement/ total time

average speed= 44/28

=22/14

=11/7

=1.5...

average speed=0/28

0

as we know that the displacement is zero in circle