Answer:
Going up the hill and going down the hill and most of the ride are examples of potential energy.
Explanation:
When the cars go up the hill they accumulate potential energy .
(P.E. = m*g*h, with m being the mass, g gravity's acceleration and h the height from the floor)
When they go down they use that potential energy and turn it into kinetic energy (the speed of the cars).
(K.E. = 1/2 m*[tex]v^{2}[/tex] with m being the mass again and v the velocity)
This is true for every time you go up or down in the ride no matter the horizontal directin (even if it's a loop or something like that)