* Newton's Third Law: For every action, there is an equal and opposite reaction.

The key is that these forces act on *different* objects.

Example:

* You push against a wall: You exert a force on the wall (action). The wall exerts an equal and opposite force back on you (reaction). Neither you nor the wall accelerates (assuming you're standing still).

Why no acceleration?

* Net Force: The forces are equal and opposite, meaning they cancel each other out. There's no *net* force acting on either object.

* Acceleration: Acceleration requires a net force. Since there's no net force, there's no acceleration.

Important Note: The forces are always equal in magnitude and opposite in direction, *regardless* of whether there is movement or not.

Let me know if you'd like more examples!