Force is the action of objects on objects, so forces all appear in pairs. Where there is power, there is a powerful object and a powerful object. The force produced by the interaction of two objects in different forms such as gravity, relative motion and deformation is called acting force.

The action and reaction between two objects are always equal in magnitude and opposite in direction. Without objects, forces cannot exist alone. This is the famous Newton's third law.

In classical mechanics, Newton's third law shows that when two objects interact, the forces exerted on each other are equal in magnitude and opposite in direction. Forces will appear in pairs: one of them is called "acting force"; Another force is called "reaction" (Latin? Action? With what? Reaction? Translation), also known as "resistance"; These two forces are equal in magnitude and opposite in direction. The resolution between them is purely arbitrary; Any force can be considered as an action, and its corresponding force naturally becomes an accompanying reaction. This pair of action and reaction is called "pairing force".

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Pairing force

According to the third law, force is the interaction between objects, and forces will appear in pairs: one of them is called "acting force"; The other force is called "reaction" (Latin translation is actio and Reatio), also called "resistance"; These two forces are equal in magnitude and opposite in direction. The resolution between them is purely arbitrary; Any force can be considered as an action, and its corresponding force naturally becomes an accompanying reaction. This pair of action and reaction is called "pairing force" or "third law pairing force". The third law is also called the Law of Action and Reaction.

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