3. Both kinetic and potential energy are part of the thrill of roller coasters. For this exercise, you will examine the path of a roller coaster and describe what type of energy is at work. Use Figure 6 to answer the following questions:

a. Describe the kinetic and potential energy at each point of the roller coaster path.

b. What happens to the roller coaster?s kinetic energy between Points B and C? What happens to its potential energy between these points?

c. Why is it important for Point A to be higher than Point C?

d. What causes the roller coaster train to lose energy over its trip?