A railroad car of length L and mass m0 when empty is moving freely on a smooth horizontal track while being loaded with sand from a stationary chute at a rate dmdt=q Knowing that the car was approaching the chute at a speed v0. (Initially at t = 0sec)Total length of the sand equal to the Railroad car length L. DetermineThe speed of the car vf at the instant when the car has cleared the chute is V0e−2qLnm0v0. The value of n is