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Physics Exploring Newton’s Laws of Motion

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Newton’s First Law of Motion Inertia A body in motion tends to stay in motion unless acted upon by an outside force. A body at rest tends to stay at rest unless acted upon by an outside force. A body persists its state of rest or of uniform motion unless acted upon by an external unbalanced force.

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Newton’s Second Law F=ma The amount of force, F, is directly proportional to the product of the object’s mass, m, and its acceleration, a. Force is measured in Newtons 1 Newton = 1 (kg*m)/s 2 The net external force on a body will cause it to accelerate in the direction in which the force is acting.

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Newton’s Third Law The law of interaction. For every action, there is an equal and opposite reaction. Whenever one body exerts a force on second body, the second body must exert a force on the first body that is equal in magnitude but opposite in direction.

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Newton’s 3 Laws of Motion Review 1 st Law – Inertia 2 nd Law – F = ma 3 rd Law – For every action, there is an equal and opposite reaction.

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Video Quiz

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Citations Elements of Physics: Motion, Force, and Gravity. Discovery Education. 2006. Discovery Education. 2 October 2009 http://streaming.discoveryeducation.com/

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