What are some examples that illustrate the difference between potential and kinetic energy?

One example that illustrates the difference between potential and kinetic energy is a roller coaster. When the roller coaster is at the top of a hill, it has potential energy because of its height above the ground. As it goes down the hill, this potential energy is converted into kinetic energy, which is the energy of motion. Another example is a stretched rubber band - when it is stretched, it has potential energy, and when it is released, it converts this potential energy into kinetic energy as it snaps back into its original shape.