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Forces come in interaction pairs
Newton’s third law: when two objects interact, they exert forces on each other that are equal in magnitude and opposite in direction. The forces act on different objects and are the same type of force. In the example, a hand pushes on a wall with 30 N to the right. The wall pushes on the hand with 30 N to the left. These forces exist at the same time; one does not wait for the other.
