A grocery cart with mass of 18 kg is being pushed at constant speed up a 12 degrees ramp by a force FP which acts at an angle of 17 degrees below the horizontal. a-Find the work done by the force FP on the cart if the ramp is 7.5 m long. Express your answer to two significant figures and include the appropriate units.

b-Find the work done by the force mg on the cart. Express your answer to two significant figures and include the appropriate units.

c- Find the work done by the force FN on the cart.Express your answer to two significant figures and include the appropriate units.