Question

does a bike rider have more potential energy at the top of the hill before he begins his ride or at the bottom of the hill after he has finished his ride?
top of the hill
the same amount at the top and the bottom
bottom of the hill

Explanation:

Potential energy (gravitational) depends on height ($PE = mgh$, where $m$ is mass, $g$ is gravity, $h$ is height). At the top of the hill, the rider’s height ($h$) is greater than at the bottom. So potential energy is higher at the top.

Answer:

1. top of the hill