What is the law of action and reaction?

The law of action and reaction is Newton's third law of motion, which states that when an object exerts a force on another object, that object simultaneously exerts a force of equal magnitude and opposite direction on the first object.

 

"For every action, there is an equal and opposite reaction.

 

That is, forces always appear in pairs, and the two forces act on two different objects, and their magnitudes are equal and their direction is opposite. For example, if you push a wall with your hand, the wall pushes your hand back with the same force. This is an example of action and reaction.

 

Examples from everyday life

 

• When a person walks on the ground: The force of the foot pushing the ground (action) and the force of the ground pushing the person (reaction)

 

• When swimming: The force of the hand pushing the water (action) and the force of the water pushing the hand (reaction)

 

• When a rocket is launched: The force of the engine pushing the gas backward (action) and the force of the rocket moving forward (reaction)

 

This law is the basic principle that explains the interaction of almost all forces around us.