Physics

Problem

A ball of mass

0.5

kg moves with a speed of

4

m/s. Which of the following combinations of mass and speed yields the same kinetic energy as that of the ball? a)

1\,\text{kg}

moving at

2\,\text{m\,s}^{-1}

2\,\text{kg}

moving at

2\,\text{m\,s}^{-1}

0.25\,\text{kg}

moving at

8\,\text{m\,s}^{-1}

1\,\text{kg}

moving at

3\,\text{m\,s}^{-1}