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November 28, 2014

Homework Help: Physics

Posted by Sara on Sunday, October 14, 2012 at 4:27pm.

A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 97.0 kg. The mass of the rock is 0.320 kg. Initially the wagon is rolling forward at a speed of 0.540 m/s. Then the person throws the rock with a speed of 16.5 m/s. Both speeds are relative to the ground.

A. Find the speed of the wagon after the rock is thrown directly forward.


B. Find the speed of the wagon after the rock is thrown directly backward.

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