Question

The law of motion that states that if one object exerts a force on another object the other object exerts an equal force back on the first object. which law was that?

Answer 1

Hola

Here is your answer

This law is third law of motion which is ever action has an equal and opposite reaction.


Hope it helps

Answer 2

Sir Isaac Newton first presented his three laws of motion in the "Principia Mathematica Philosophiae Naturalis" in 1686. His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects.