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An empty railroad car of mass 4400 kg is being pulled beneath a grain elevator that dumps grain at the rate of 175 kg/s. If the coefficient of friction among the car wheels and the track is 0.021, what is the force required to keep the car moving at a constant speed of 1.9 m/s 25.0 s after the grain is first dumped on the car

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Category:- Physics
Reference No.:- M91222215

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