A pirate is looking for buried treasure. He wandered 30m due north and 40m due south. What
is the magnitude of his displacement from his original position?

1)30m
2)40m
3)50m
4) 70m

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?