5. A group of students is riding a frictionless roller coaster at an amusement park. Use the diagram below to answer the following questions. Their mass combined with that of the cart is 1000 kg.
H = 10m
H = 5m
H = 0m
a. How much work is done in getting the students to point A?
b. How much gravitational potential energy do they have at point A?
c. How much gravitational potential energy do they have at point B?
d. How much gravitational potential energy do they have at point C?