Question 5.1a: The figure shows a box of mass m = 5.50 kg pulled to the right across a horizontal surface by a constant tension force of magnitude 7 = 23.0 N. The tension force is inclined at an angle = 15.0 above the horizontal and the friction force has magnitude fk = 13.0 N. The box is pulled a distance d = 2.20 m. m Determine the work done on the box by the tension force, the normal force, and the kinetic friction force. We'll use WT, W and WfK to represent the magnitudes of the tension, normal, and friction forces, respectively. W = W = ] ] W f NFK ] The figure below shows a 2.05 x 104-N car rolling down a ramp inclined at an angle of 0 = 30.5 above the horizon. The car rolls a distance of 13.0 m. Question 5.1b: 190-8 a Determine the work W, that the force of gravity does on the car.