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Newtons 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.

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Presentation on theme: "Newtons 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."— Presentation transcript:

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2 Newtons 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

3 Newtons First Law – Inertia Law of Inertia (Law 1)Break it Down 1. An object at rest will stay at rest, 2. and an object in motion will stay in motion, 3. unless acted upon by an outside force 1. If an object is at rest it will never move 2. If an object is in motion it will never stop moving 3. UNLESS – a force acts on it Friction and air resistance slow things down Push or pull make things move

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5 Newtons First Law – Inertia How does this picture relate to the law of Inertia (Newtons First law?)?

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

7 Law of Force and Acceleration (Law 2) Break it Down 1. The acceleration of an object 2. depends on the object's mass and 3. magnitude of the force acting on it 4. (F=ma) 1. Acceleration: speeds up, slows down, or changes direction 2. The greater the mass the less acceleration (vice versa) 3. The greater the force the greater the acceleration (vice versa) 4. Equation for Force and Acceleration Newtons Second Law – Force and Acceleration

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

10 For every action, there is an equal and opposite reaction Newtons Third Law – Action and Reaction

11 Law of Action and Reaction (Law 3) Break it Down 1. For every action 2. There is an equal reaction 3. There is an opposite reaction 1. For every force 2. The reaction force will be the same Newtons of force (depending on mass and acceleration) 3. The reaction force will be in the opposite direction Newtons Third Law – Action and Reaction

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

14 Newtons Laws of Motion Video Review


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