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)-4 m/s,+4 m/s
C)+4 m/s,-4 m/s
D)-14 m/s,14 m/s

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The Answer of 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)-4 m/s,+4 m/s
C)+4 m/s,-4 m/s
D)-14 m/s,14 m/s

Two Identical 7-Kg Bowling Balls Roll Toward Each Other