Homework 8 (Ch. 7, 8) 10f12 > -/1 E: III View Policies Current Attempt in Progress The gure shows three forces applied to a trunk that moves leftward by 3.48 m over a frictionless oor. The force magnitudes are F1 = 5.29 N, F2 = 9.42 N, and F3 = 3.37 N, and the indicated angle is 6 = 60. (a) During the displacement, what is the net work done on the trunk by the three applied forces, the gravitational force, and the normal force? (b) Is there a net transfer of energy to or from the trunk? (c) Does the kinetic energy of the trunk increase or decrease