Question

1/20
on a roller coaster, where is maximum kinetic energy?
at the top of a big hill
at the bottom of a big hill
when going around a corner
when going upside down

Explanation:

Kinetic energy (KE) depends on speed ($KE = \frac{1}{2}mv^2$)). At the bottom of a big hill, the roller coaster has converted most of its potential energy (from height) into kinetic energy, so speed is maximum here. At the top of a hill, potential energy is high and KE is low. Going around a corner or upside down doesn't maximize speed as much as the bottom of a hill.

Answer:

B. At the bottom of a big hill