15 Forces at Play

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Forces at Play by LISA BENJAMIN

Do you like to play sports? Sports are fun. They are also work. In science, work is anything that needs force. A force is a push or a pull. It makes something move.

A pitcher uses force to throw the ball. He pushes the ball with his hand. The ball moves. Force helps you hit a baseball. The batter pushes the ball with her bat. The ball moves.

Forces stop things from moving, too. This player pulls the ball from the air. The ball stops moving. What happens if the player does not catch the ball? It falls to the ground. Gravity pulls things to Earth.

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