Here's why:
* Newton's Third Law: This fundamental law of physics states that for every action, there is an equal and opposite reaction. This means that whenever one object pushes or pulls on another object (exerts a force), the second object pushes or pulls back with the same force in the opposite direction.
* Forces come in pairs: Forces never exist in isolation. They always occur in pairs, acting on two different objects.
Example:
* When you push a box, you are exerting a force on the box. The box simultaneously exerts an equal and opposite force on you.
* This is why you feel the box pushing back on you, and why you need to exert a force to move it.
Let me know if you'd like more examples or further explanation!
