Physics

Problem

0.50\,\text{kg}

ball is moving in a horizontal circle such that its kinetic energy is

45\,\text{J}

and it completes each revolution in

1.5\,\text{s}

. The radius of the circle is closest to a)

6.4\,\text{m}

1.6\,\text{m}

3.2\,\text{m}

2.3\,\text{m}