Hurry &
which of the following is not an example of work?
a.) pushing a box across the floor
b.) picking up a box off the floor
c.) holding a tray in the cafeteria line
d.) raising a barbell over your head

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?