Holden is trying to determine the velocity of his race car he went 20 m east turned around and went 40 m west he turned the car one more time and 135 m east his car was 15 m from the starting line he took five seconds what is the cars velocity

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?

This is the number of complete movements of a wave per second.

Convection currents are caused by differences in what two things?