A golf ball moving forward with 1 unit of momentum strikes a heavy bowling ball that is initially at rest. After the golf ball bounces backward, the bowling ball is in motion with a momentum that must be
1) 1 unit.
2) more than 1 unit.
3) less than 1 unit.
The magnitude of the golf ball's momentum after collision must be somewhat less than 1 unit, for otherwise a violation would occur in the conservation of
4) energy.
5) momentum.
6) both.
7) neither.
Answer: 2, 4
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