A golf ball traveling 3 m/s to the right collides in a head-on collision with a stationary bowling ball in a friction-free environment. If the collision is almost perfectly elastic, the speed of the golf ball immediately after the collision is
A) slightly less than 3 m/s.
B) much less than 3 m/s.
C) slightly greater than 3 m/s.
D) equal to 3 m/s.
A
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