A force of 333.5 N is used to push a car 28.7 m horizontally in 3.43 s. Calculate the power developed.

A truck does 3.2 kJ of work pulling horizontally on a car to move it 1.8 m horizontally in the direction of the force.Calculate the magnitude of the force.

When an automobile moves with constant speed down a highway, most of the power developed by the engine is used to compensate for the mechanical energy loss due to frictional forces exerted on the car by the air and the road. If the power developed by an engine is 175 hp, estimate the total frictional force acting on the car when it is moving at a speed of 29 m/s. One horsepower equals 746 W.

A horizontal force of 155 N is used to push a 50.0-kg box 7.00 m on a rough, horizontal surface. If the box moves at constant speed, find the energy lost due to friction, and