Homework # 36 - Loss of Energy Handout Problems: 1. A steel ball falls from a table to the floor and then comes to rest. (a) What changes were taking place in its energy while it was falling? (b) What happened to its initial energy after it came to rest? 2. As a block of wood of mass 2.0 kg slides along a floor, its speed decreases from 4.0 m/s to 1.0 m/s. (a) How much kinetic energy does it lose? (b) How much work does the frictional resistance of the floor do upon the block? (c) If the reduction in speed takes place over a distance of 10 m, what is the force of friction acting on the block? 3. A 0.10-kg steel ball drops to the floor from a height of 2.0 m and then rebounds to a height of 1.9 m. (a) What was the potential energy of the ball at the moment it was dropped? (b) What was the kinetic energy of the ball just before it hit the floor? (c) What kinetic energy did the ball have just after it hit the floor