Biff! The racket hits the tennis ball, and the ball sails across the net. A point is scored – thanks to a hamburger!
Of course, the hamburger did not actually hit the ball. The player did. But the player ate the hamburger for lunch, and the player’s body got energy from the hamburger. Some of this energy was used to swing the racket. And the energy in the swinging racket knocked the ball over the net. So stand up and cheer for the hamburger. It helped score the point!
There are only a few kinds of energy. But each kind of energy can change into other kinds. Chemical energy in the food you eat can be changed into the energy of movement when you run or hit a ball.
Picture Credit : Google