A railroad car of length L and mass m0 when empty is moving freely on a horizontal track while…

A railroad car of length L and mass m0 when empty is moving freely on a horizontal track while being loaded with sand from a stationary chute at a rate dm/dt = q. Knowing that the car was approaching the chute at a speed v0, determine (a) the mass of the car and its load after the car has cleared the chute, (b) the speed of the car at that time.

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