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# Download Newton`s Second and Third Laws of Motion

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Transcript

Newton’s Second Law of Motion Force is proportional to mass and acceleration F= ma Net external force = mass x acceleration If you apply more force to an object, it accelerates at a higher rate. If an object has more mass it accelerates at a lower rate because mass has inertia. Newton's Second Law Three forms of the second law: Newton’s Third Law For every action, there is an equal and opposite reaction Forces always exist in pairs; these are called action-reaction pairs Action-reaction pairs do not cancel each other out because the forces are acting on different objects