Two Identical 7-Kg Bowling Balls Roll Toward Each Other

question 44

Multiple Choice

Two identical 7-kg bowling balls roll toward each other. The one on the left is moving at +4 m/s while the one on the right is moving at -4 m/s. What is the velocity of each ball after they collide elastically?

• A) "Neither is moving."
• B) "-14 m/s, 14 m/s"
• C) "+4 m/s, -4 m/s"
• D) "-4 m/s, +4 m/s"

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