Complete the statement. Assume that the sled's mass did not change.
The gravitational potential energy stored between the sled and Earth () as Rachel rode down the hill.

 - decreased
 - stayed the same
 - increased
Think about how the distance between the sled and the center of Earth changed.
The bottom of the hill was lower than the point where Rachel started sledding. As Rachel rode toward the bottom of the hill, the distance between the sled and the center of Earth decreased. So, the gravitational potential energy stored between the sled and Earth decreased as Rachel rode down the hill.