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define newtons three laws of motion
First Law: Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.

Second Law: The relationship between an object's mass m, its acceleration a, and the applied force F is F = ma. Acceleration and force are vectors ; in this law the direction of the force vector is the same as the direction of the acceleration vector.

Third Law: For every action there is an equal and opposite reaction.


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