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A ping pong ball (mass 0.0034 kg) strikes a bowling ball (mass 9 kg) head on...

A ping pong ball (mass 0.0034 kg) strikes a bowling ball (mass 9 kg) head on with a speed of 93 m/s and bounces off elastically, i.e. energy is also conserved. What is the speed of the bowling ball after impact? Ignore rotational motion.

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