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exercise1.6b_NewtonsLaws-key - Exercise 1.6 b...

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Exercise 1.6 b: Manifestations of Newton’s Laws Newton’s 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. Newton’s 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. Newton’s Third Law: For every action there is an equal and opposite reaction. Newton’s Law of Gravity: Every object in the universe attracts every other object with a force, directed along the line of centers of the two objects, that is proportional to the product of their masses and inversely proportional to the square of the separation between the two objects . Newton’s 3 Laws of Motion and the Universal Law of Gravity are listed above.
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