A 31000- kg railroad car with an open top rolls along a, Physics

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A 31000- kg railroad car with an open top rolls along a

A 31000- kg railroad car with an open top rolls along a straight track with a speed of 4.91 km/h. It passes under a water fall that pours water straight into the car at a rate of 600 kg/s How much force is necessary to keep the car traveling at constant speed? Assume that friction can be neglected.

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Physics: A 31000- kg railroad car with an open top rolls along a

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Physics: A 31000- kg railroad car with an open top rolls along a

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