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A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the...

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Physics

A wagon is rolling forward on level ground. Friction isnegligible. The person sitting in the wagon is holding a rock. Thetotal mass of the wagon, rider, and rock is 98.9 kg. The mass ofthe rock is 0.291 kg. Initially the wagon is rolling forward at aspeed of 0.490 m/s. Then the person throws the rock with a speed of16.1 m/s. Both speeds are relative to the ground. Find the speed ofthe wagon after the rock is thrown (a) directly forward in one caseand (b) directly backward in another.

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3.6 Ratings (396 Votes)
Part A When rock is thrown in forward direction then Using Momentum conservation Pi Pf MV m1v1 m2v2 M Mass of rock wagon 989 kg m1 mass of rock 0291 kg m2    See Answer
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