A 270-kg crate is being pushed across a horizontal floor by a force P that makes an angle of 30.7 below the horizontal. The coefficient of kinetic friction is 0.284. What should be the magnitude of P, so that the net work done by it and the kinetic frictional force is zero? Number i UnitsA lZlO-kg car is being driven up a 9.27 hill. The frictional force is directed opposite to the motion of the car and has a magnitude of 535 N. Aforce F is applied to the car bythe 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 307 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? Number n Units 4}