From the conservation of momentum:

$\begin{array}{rcl}{\mathbf{m}}_{\mathbf{g}}{\mathbf{v}}_{\mathbf{gf}}\mathbf{+}\mathbf{Final}\mathbf{}\mathbf{bowlb}\mathbf{}\mathbf{moment}& \mathbf{=}& \mathbf{Initial}\mathbf{}\mathbf{golf}\mathbf{}\mathbf{moment}\mathbf{+}\mathbf{initial}\mathbf{}\mathbf{bowlb}\mathbf{}\mathbf{moment}\end{array}$

A golf ball moving forward with 1 unit of momentum strikes and bounces backward off a heavy bowling ball that is initially at rest and free to move. The bowling ball is set in motion with a momentum of

A) less than 1 unit.

B) 1 unit

C) more than 1 unit.

D) not enough information

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