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I am having some trouble with this problem. I would appreciate any help/advice/hints.

A child of mass 33 kg jumps off of a wagon. After jumping, the child's velocity is 4.0 m/s. If the mass of the wagon is 7.2 kg, determine the velocity of the wagon after the child jumps off.

All I have figured is that the childs momentum is 132 Kgm/s right.

I am confused as to how to get the velocity of the wagon now. I do not have enough info to use Momentum= Mass X Velocity.

Any help would be appreciated.

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# Homework Help: Momentum Question

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