Please show your solutions in paper.I will give you a very good feedback. Thank you!

5. A 220-lb man jumps out a window into a fire net 36 ft below. The net stretches 4.4 ft before bringing him to rest and tossing him back into the air. What is the potential energy of the stretched net if no energy is dissipated? 6. A body of mass m starts down from the top of an inclined plane 20 ft long and 10 ft high. What is its velocity at a point 12 it from the top if coefficient of friction is 0.1