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FORCE Mr. Skirbst Physical Science Topic 04

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What is force?

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- a push or a pull on an object

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What is force? Forces can enhance/cancel each other - a push or a pull on an object

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What is force? Forces can enhance/cancel each other Unbalanced forces = movement - a push or a pull on an object

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What is friction?

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- A force acting in the opposite direction of a moving object

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NEWTON’s 3 LAWS of MOTION

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1.INERTIA (Latin for “lazy”)

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NEWTON’s 3 LAWS of MOTION 1.INERTIA (Latin for “lazy”) - objects at rest (or in motion) remain that way until acted upon by a force

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NEWTON’s 3 LAWS of MOTION 2.F = (m) (a)

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NEWTON’s 3 LAWS of MOTION 2.F = (m) (a) - force = mass x acceleration - “The harder you push, the faster you go” - “The bigger they are, the harder they fall.”

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NEWTON’s 3 LAWS of MOTION 3.Action - Reaction

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NEWTON’s 3 LAWS of MOTION 3.Action - Reaction - for every action, there is an equal and opposite reaction

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NEWTON’s LAW of UNIVERSAL GRAVITATION

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- ALL objects attract each other by the force of gravity

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NEWTON’s LAW of UNIVERSAL GRAVITATION - ALL objects attract each other by the force of gravity - GRAVITY – force of attraction between objects with mass

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NEWTON’s LAW of UNIVERSAL GRAVITATION - WEIGHT – measures force of gravity on an object equation: w = (m)(g) Where g = acceleration due to gravity

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