Answer:
548800J
Explanation:
Given parameters:
Mass of roller coaster = 800kg
Height of hill = 70m
Unknown:
Change in potential energy = ?
Solution:
The change in potential energy is the difference between the potential energy at the bottom and at the top.
Potential energy at the bottom is 0J
So;
Change in potential energy = mgh - 0
m is the mass, g is the acceleration, h is the height
Change in potential energy = 800 x 9.8 x 70 = 548800J
