Question

solve in brief

A cyclist rides his bicycle with a uniform speed of 2.2 m/s. He completes one revolution around a circular track in 20 s.

What is the radius of the track?

Answer 1

v (velocity) = 2.2ms^-1

t = 20 s

v = (2 × π × r)/t

2.2 = (2 × 22/7 × r) /20

44 = 44/7 × r

44 × 7/44 = r

7 m = r