Newton’s 3 Laws of Motion

Newton’s First Law – Inertia An object at rest will stay at rest, and an object in motion will stay in motion, unless acted upon by an outside force

Newton’s First Law – Inertia Law of Inertia (Law 1) Break it Down An object at rest will stay at rest, and an object in motion will stay in motion, unless acted upon by an outside force If an object is at rest it will never move If an object is in motion it will never stop moving UNLESS – a force acts on it Friction and air resistance slow things down Push or pull make things move

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Newton’s First Law – Inertia How does this picture relate to the law of Inertia (Newton’s First law?)?

Newton’s Second Law – Force and Acceleration The acceleration of an object depends on the object's mass and magnitude of the force acting on it (F=ma)

Newton’s Second Law – Force and Acceleration Law of Force and Acceleration (Law 2) Break it Down The acceleration of an object depends on the object's mass and magnitude of the force acting on it (F=ma) Acceleration: speeds up, slows down, or changes direction The greater the mass the less acceleration (vice versa) The greater the force the greater the acceleration (vice versa) Equation for Force and Acceleration

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Newton’s Second Law – Force and Acceleration How does this picture relate to Newton’s second law? (F=ma) Hint: Heavy cars and light motor cycles!

Newton’s Third Law – Action and Reaction For every action, there is an equal and opposite reaction

Newton’s Third Law – Action and Reaction Law of Action and Reaction (Law 3) Break it Down For every action There is an equal reaction There is an opposite reaction For every force The reaction force will be the same Newtons of force (depending on mass and acceleration) The reaction force will be in the opposite direction

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Newton’s Third Law – Action and Reaction How does this picture relate to Newton’s third law? (action/reaction)

Newton’s Laws of Motion Video Review