What type of energy is stored in a stretched or compressed spring?

What is the energy transformation that occurs in an electric pencil sharpener?

In the classroom demonstration shown below, a rubber ball is dropped from Position 1. The ball bounces as shown. At which of these positions does the ball have both the greatest kinetic energy and the least potential energy?

At which point does the ball have the most potential energy?

Which statement correctly describes the cart's kinetic energy and gravitational potential energy?

Elastic potential energy is energy stored in an object, such as a spring, due to the object being stretched or compressed. In which position is it most likely that the spring has lost its elastic potential energy?

At what point on the image does the roller coaster car have the greatest gravitational potential energy?

How confident do you feel about this topic now?