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July 31, 2014

Homework Help: physics

Posted by heather on Monday, February 28, 2011 at 11:44am.

A 1460-kg car is being driven up a 10.0 hill. The frictional force is directed opposite to the motion of the car and has a magnitude of 497 N. A force F is applied to the car by the road and propels the car forward. In addition to these two forces, two other forces act on the car: its weight W and the normal force FN directed perpendicular to the road surface. The length of the road up the hill is 209 m. What should be the magnitude of F, so that the net work done by all the forces acting on the car is 149 kJ?

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