Answer: Newton's third law
Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.
Explanation:
The continuious physical force per unit area that one region of a gas, liquid, or solid exerts on another.
I think there is only one.
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</span>Both are conserved<span>.</span>