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Asked by Rasneet Last Modified
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Mass of the gun, M = 100 kg Mass of the shell, m = 0.020 kg Muzzle speed of the shell, v = 80 m/s Recoil speed of the gun = V Both the gun and the shell are at rest initially. Initial momentum of the system = 0 Final momentum of the system = mv â?? MV Here, the negative sign appears because the directions of the shell and the gun are opposite to each other. According to the law of conservation of momentum: Final momentum = Initial momentum mv â?? MV = 0 â?´ V = mv / M = 0.020 Ã? 80 / (100 Ã? 1000) = 0.016 m/s
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