Find speed of wagon after rock is thrown directly forward

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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 91 kg. The mass of the rock is0.30 kg. Initially the wagon is rolling forward at a speed of 0.52m/s. Then the person throws the rock with a speed of 15 m/s. Both speeds are relative to the ground. Find the speed of the wagon after the rock is thrown(a) directly forward in one case and (b) directly backward in another.

Reference no: EM13563911

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