An 18.3 kg block is dragged over a rough, horizontal surface by a constant force of 196 N acting at an angle of angle 31.4 ? above the horizontal. The block is displaced 82.8 m and the coefficient of kinetic friction is 0.105. Find the work done by the 196 N force. The acceleration of gravity is 9.8 m/s 2 . Answer in units of J. Find the magnitude of the work done by the force of friction. Answer in units of J. Find the work done by the normal force. Answer in units of J. What is the net work done on the block? Answer in units of J.