The figure shows three forces applied to a trunk that moves leftward by 3.04 m over a frictionless floor. The force magnitudes are F1= 4.97 N, F2= 8.50 N, and F3 = 2.55 N, and the indicated angle is 0 = 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? (a) Number Units (b) to (c) increase