What is action/reaction?

What is action/reaction?

• A. For every action, there is an equal reaction
• B. There is no reaction to action
• C. Action occurs before reaction
• D. Reaction is greater than action

Answer: (A)

Action and reaction are described by Newton's third law: for every action, there is an equal and opposite reaction. This means that when one object pushes on a second object, the second object pushes back on the first with the same strength in the opposite direction. These pair of forces act on two different bodies, so they don’t cancel each other out; instead, they produce motion according to the overall system’s setup. This statement is the best answer because it captures both the sameness in magnitude and the opposite direction of the two forces involved in any interaction. The idea that there is no reaction contradicts the observable counterforce that accompanies every push or pull. The notion that action occurs before reaction reflects a common misconception about timing; in Newton’s framework, the action and reaction forces occur as a pair and are effectively simultaneous, even if the resulting motions of the bodies differ due to inertia or other forces. The thought that the reaction is greater than the action also conflicts with the law, which states the forces are equal in magnitude.

Action and reaction are described by Newton's third law: for every action, there is an equal and opposite reaction. This means that when one object pushes on a second object, the second object pushes back on the first with the same strength in the opposite direction. These pair of forces act on two different bodies, so they don’t cancel each other out; instead, they produce motion according to the overall system’s setup.

This statement is the best answer because it captures both the sameness in magnitude and the opposite direction of the two forces involved in any interaction. The idea that there is no reaction contradicts the observable counterforce that accompanies every push or pull. The notion that action occurs before reaction reflects a common misconception about timing; in Newton’s framework, the action and reaction forces occur as a pair and are effectively simultaneous, even if the resulting motions of the bodies differ due to inertia or other forces. The thought that the reaction is greater than the action also conflicts with the law, which states the forces are equal in magnitude.