Question

A cyclist goes around a circular track once every 2 mins. If the radius of the circular track is 110m, Calculate the speed of the cyclist.

Answer 1

Given,

Time taken, $t=2mins=120sec$

The radius of circular track, $r=110m$

Total distance, $d=2\pi r=2\pi \left(110\right)=690.8m$

Now, $$\begin{gathered} Speed=\frac{Dis\tan ce}{time} \\ Speed=\frac{690.8}{120}m{s}^{-1} \\ Speed=5.75m{s}^{-1} \end{gathered}$$