Question

a body travels along a circular path of radius 70 metre after travelling half a revolution in 20 seconds find the(1.) average velocity (2.) average speed​

Answer 1

Explanation:

Given-

Radius(r) = 70m, Time taken(t) = 20s

Therefore, Circumference (C) = 2πr

C = 440m

He complete half a revolution,

Therefore,

distance travelled(S) = 440/2 = 220m

avg. vel. = S/t = 70/20 = 3.5 m/s

avg. speed = avg. vel. = 3.5m/s (In this case)

Hope it helps plz mark me as brainliest