Answer: what is Newton's third law?
Newton's third law (motion) states for every action (force) in nature there is an equal and opposite reaction. If object A exerts a force on object B, object B also exerts an equal and opposite force on object A. In other words, forces result from interactions.
Explain how Newton's Third Law applies to problems involving the motion or two colliding objects.
Newton's third law of motion is naturally applied to collisions between two objects. In a collision between two objects, both objects experience forces that are equal in magnitude and opposite in direction. Such forces often cause one object to speed up (gain momentum) and the other object to slow down (lose momentum). When the objects bump into each other, it exert equal and opposite forces on each other.
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