Physics - Circular Motion Question with Solution | TestHub

Distance trevelled in one revolution $\begin{array}{rl}& =2\pi r\\ & \therefore \text{ Average speed }=\frac{\text{ Totaldistance }}{\text{ Total time }}\\ & \Rightarrow \frac{2\pi r}{t}=\frac{2\times 3.14\times 100}{62.8}\\ & =10\mathrm{m}/\mathrm{s}\end{array}$ Displacement in one revolution is zero. $\begin{array}{rl}\therefore \text{ Average Velocity }=& \frac{\text{ Net displacement }}{\text{ True }}\\ & =\frac{0}{t}=0\end{array}$