A 46.3-kg box is being pushed a distance of 8.35 m across the floor by a force P whose magnitude is 170 N. The force P is parallel to the displacement of the box. The coefficient of kinetic friction is 0.227 . Determine the work done on the box by (a) the applied force, (b) the friction force, (c) the normal force, and (d) by the force of gravity. Be sure to include the proper plus or minus sign for the work done by each force. (a) Number Units (b) Number Units (c) Number Units (d) Number Units