Newton's Third Law indicates that for every action, there is...

Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction. This principle highlights that forces always occur in pairs: when one body exerts a force on a second body, the second body exerts a force of equal magnitude but in the opposite direction on the first body. This concept is fundamental in understanding interactions in physics, particularly in mechanics, and it underscores the idea that forces are mutual between interacting objects.

In practical terms, this means that if you push against a wall, the wall pushes back against you with the same amount of force. This principle helps explain a wide variety of phenomena, from the propulsion of rockets (where gases are expelled backwards, and the rocket moves forwards) to the way people walk (pushing down and backwards against the ground results in the ground pushing us up and forwards).