Question

Find the average speed of a bicycle if it completes two round of a circular track of radius 140m twice in 5min 52 sec.

Answer 1

36km/h

total distance=8piR

total time = 352s

R=140m

A.S = 8piR/352 = 10m/s

= 36km/h

Answer 2

Answer:

v = 4.99 m/s

Explanation:

v = ?

r = 140 m

t = 352 s

s = 4π r = 4 x 3.14 x 140 =  1758.4 m

v = s / t

v = 1758.4 / 352

v = 4.99 m/s