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Answer to Question #31997 in Mechanics | Relativity for saysha pal

Question #31997
according to Newtons 3rd law of motion every force is accompanied by an equal and opposite force .How can a movement ever takes place?
Expert's answer
If there are two objects, A and B, and A exerts a force on B, Newton's third law says that B exerts a force of equal magnitude and opposite direction on A. The two forces are not on the same object and are therefore not "balanced". According to Newton’s first law of motion, an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. So, you see, unbalanced forces cause a motion.

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