Energy Stored
Energy cannot be created or destroyed, but it can be saved in various forms. One way to store it is in the form of chemical energy in a battery. When connected in a circuit, energy stored in the battery is released to produce electricity.If you look at a battery, it will have two ends: a positive terminal and a negative terminal. If you connect the two terminals with wire, a circuit is formed. Electrons will flow through the wire and a current of electricity is produced.
Energy can also be stored in many other ways. Batteries, gasoline, natural gas, food, water towers, a wound up alarm clock, a Thermos flask with hot water and even pooh are all stores of energy. They can be transferred into other kinds of energy.
When you slide a snooker ball on the board (table) it moves quickly, and then slowly, and gradually comes to a stop. This means that the kinetic energy (moving) of the ball decreases and eventually to zero when the balls come to rest.
<span>With zero external force on the pool table, the energy of the ball must be conserved. Then, what happened to the kinetic energy? Kinetic energy has been dissipated through friction.</span>
