Reaction (physics)
The third of Newton's laws of motion of classical mechanics states that forces always occur in pairs. This is related to the fact that a force results from the interaction of two objects. Every force ('action') on one object is accompanied by a 'reaction' on another, of equal magnitude but opposite direction. The attribution of which of the two forces is action or reaction is arbitrary. Each of the two forces can be considered the action, the other force is its associated reaction.
Read more about Reaction (physics): Misconceptions
Famous quotes containing the word reaction:
“Children, randomly at first, hit upon something sooner or later that is their mother’s and/or father’s Achilles’ heel, a kind of behavior that especially upsets, offends, irritates or embarrasses them. One parent dislikes name-calling, another teasing...another bathroom jokes. For the parents, this behavior my have ties back to their childhood, many have been something not allowed, forbidden, and when it appears in the child, it causes high-voltage reaction in the parent.”
—Ellen Galinsky (20th century)