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Newton's Third Law

Newton’s third law is about forces acting in pairs, we call one of these forces the action and the other the reaction.

Newton’s third law:

Action and reaction are equal and opposite     or

When a force acts on one body an equal and oposite force acts on another body

Notice that the two forces, the action and reaction, act on different bodies. If they acted on the same body it would be impossible to move anything.

© Keith Gibbs 2009