I. Solve the following problems completely: Show your complete solution and Sketch the graph: 1. A 5.0 kg block rest on top of a table 100cm from the floor. Find the Potential Energy (P.E.) of the block relative to, a. The floor. b. The seat of a chair 50cm from the floor, and c. The ceiling 4m from the floor. 2. A horizontal force of 20N drags a small sled 42m across the ice at constant speed. The mass of the sled is 8 kg and the coefficient of the sliding friction is 0.30. Find the work done by the pulling force and the frictional force. What is the resultant force (Net work) done by the forces acting on the sled? 3. To push a 25kg crate up a 25' incline, a worker exerts a force of 120N, parallel to the incline. As the crate slides 4m, A. How much work is done on the crate by: a. The worker. b. The force of gravity, and c. The normal force due to the incline. B. What is the net work (Resultant force) done by the forces acting on the crate