A Newton's Cradle is a device that demonstrates the conservation of momentum and energy. The diagram consists of a series of metal balls suspended from a frame, with an equal distance between each ball. When one ball is lifted and released, it swings forward and collides with the stationary balls, causing the last ball to swing outward with the same force. This reaction creates a chain reaction, with each ball swinging back and forth in turn. The motion of the balls demonstrates the transfer of kinetic energy from one ball to the next, and the conservation of momentum as the balls react to each other's movements. You can use this template if you want to explain this idea to your audience.