A ball moving to the right at strikes a stationary ball in a perfectly elastic…

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

0.20\,\text{kg}

ball moving to the right at

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

strikes a stationary ball in a perfectly elastic head-on collision and rebounds to the left at

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

. The mass of the second ball is closest to (a)

0.20\,\text{kg}

(b)

0.33\,\text{kg}

(c)

0.13\,\text{kg}

(d)

0.25\,\text{kg}