Physics

Problem

A small stone tied to a string is whirled horizontally in a circle of radius

0.80\,\text{m}

, completing one revolution in

0.50\,\text{s}

. What is the speed of the stone? a)

5.0\,\text{m/s}

1.6\,\text{m/s}

10.1\,\text{m/s}

20.1\,\text{m/s}