Question

A runner runs on a circular track of radius 35 m. Running uniformity, if he covers one round of

this distance in 21 seconds, what is his Average velocity after completing two rounds of the

track? How much time does he takes to run 100 m? (Take pie=22/7)

Answer 1

Answer:

The person takes 9.475 seconds to complete 100m

Explanation:

Radius = 35m

2 pie r

2 X 22/7 X 35 =

44 X 5 = 220

the circular track is of 220m

velocity =speed/time

speed = ?

speed=distance/time

two rounds =2x 220=440

time =42

s=440/42=10.476

v =10.476/1=10.476

time = distance/time

time = 100/10.476

time =9.475 seconds to run 100meters