9. Work & Energy

What is the power output of a $500\mathrm{kg}$ car driving a constant $29\mathrm{m}/\mathrm{s}$ up a hill angled at 6° above the vertical? Ignore air resistance.

A 600 kg object is being pulled up a frictionless inclined plane at an angle of 30 degrees to the horizontal. If the force applied parallel to the incline is 3000 N, how much work is done in moving the object 10 meters up the incline?

If an object with an initial speed encounters a constant frictional force on an inclined plane and comes to a stop over a certain distance, which of the following expressions correctly relates the work done by the kinetic force of friction to the initial kinetic energy of the object?