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Force - a push or a pull that one object exerts on another.

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For example - a magnet pulling an iron nail,� a person pushing a chair.

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How Do You Measure Force?

We use a spring scale. In a spring scale the spring is attached to an object and the spring is pulled until the object moved.

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Newton

A unit for measuring force. It is equal to 9.8 kilogram-meter per second square

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How Do Forces Affect Objects?

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Force can change the motion of objects.�For example, when a batter strikes the ball. �The bat has exerted a force on the ball and has it flying toward the outfield. ��Force can change the shape of an object.�For example, when you crush a soda can. The force your hand applied can crumple the soda can into a new, squashed shape.

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