A man pushing a crate of mass

m = 92.0 kg

at a speed of

v = 0.875 m/s

encounters a rough horizontal surface of length

= 0.65 m

as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.360 and he exerts a constant horizontal force of 287 N on the crate.

(a) Find the magnitude and direction of the net force on the crate while it is on the rough surface.

magnitude	N
direction	---Select--- same as the motion of the crate opposite as the motion of the crate

(b) Find the net work done on the crate while it is on the rough surface. J

(c) Find the speed of the crate when it reaches the end of the rough surface. m/s