Change the start height of the skater and watch how it affects how high the skater goes on the other side.
In other words, start the skater at 2 meters and watch how high it goes on the other side.
Then start the skater at 4 meters and watch how high it goes on the other side.
Then start the skater at 6 meters and watch how high it goes on the other side.
Is the ending height always the same, more than, or less than the starting height?