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# Conservation of momentum problem

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A 62-kg child is sitting on a wagon full of bricks that has a mass of 150 kg. In order to move the wagon without touching the ground, the child throws two bricks each of mass 3.0 kg in the direction opposite to the direction the wagon is to go. How fast will the wagon move if the bricks are thrown at 2.0 m/s?

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#### Solution Preview

Mass of thrown bricks (m)= 2*3.0 = 6.0 kg

Mass of wagon (bricks + child), after throwing two bricks
(M') = 62 + 150 ...

#### Solution Summary

This solution provides a quick answer for finding the velocity of the wago using the law of conservation of momentum.

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