A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.865 m/s encounters a rough horizontal surface of length f = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.350 and he exerts a constant horizontal force of 283 N on the crate. m (a) Find the magnitude and direction of the net force on the crate while it is on the rough surface. magnitude N direction ---Select--- (b) Find the net work done on the crate while it is on the rough surface. [c) Find the speed of the crate when it reaches the end of the rough surface. m/s