A 1420-kg car is being driven up a 7.52 ° hill. The frictional force is directed opposite to the motion of the car and has amagnitude of 514 N. A force F is appliedto the car by the road and propels the car forward. In addition to these two forces, two other forces act on the car: itsweight W and the normalforce FN directed perpendicular to the road surface. The length of the road up the hill is 306 m. What should be the magnitude of F, so that the net work done by all the forces acting on the car is 148 kJ?