A 150 kg dog sled is pulled along the Iditarod trail in Alaska. The sled is pulled horizontally from rest with an acceleration of 1.5 m/s2. What is the tension force on the sled if the friction force between the sled runners and the snow is 40 N.

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?