2. A box is placed on a horizontal surface and pushed to the left by a force of 600 N applied at an angle of 20 degrees below the horizontal. If the mass of the box is 50 kg, and the coefficient of kinetic friction between the box and the surface is 0.3, calculate the following: a. The frictional force acting on the box. b. The work done by friction on the box. c. The work done by the applied force on the box. d. The work done by the normal force from the table on the box