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PHY231 lecture5 - Physic 231 Lecture 5 Main points of...

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Main points of today’s lecture: Physic 231 Lecture 5 Main points of today s lecture: Newton’s 1 st law: If there is no net force, the velocity of a mass remains constant (neither the magnitude nor the direction of the velocity changes). Newton’s 2 nd law: m is the mass of the object. It is proportional to the number a m F = of nucleons (neutrons and protons) in an object. is the net (total) force acting on the object. It is the vector sum of all forces acting on the object. F
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Newton’s First Law If there is no net force, the velocity of a mass remains constant (neither the magnitude nor the direction of the velocity changes). Obj t t t f l t f Objects at rest feel no net force.
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