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Title a new page: Unbalanced & Balanced Forces. (this does not have to be in your old journal- but you must take notes on these terms because they are important to PHYSICS!

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Force Not this kind of force.

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Force Not this kind of force either.

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Force ► A force is a push or a pull exerted on an object. ► Force is measured in a unit called a Newton (I wonder where that came from?)

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Forces ► Forces are always at work on all things. ► Forces are at work on moving objects. ► Forces are at work on non-moving objects.

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Balanced Forces Balanced forces are: ► When forces cancel each other out. ► There is no change in motion. ► If the object is standing still it remains standing still. ► If the object is moving it continues to move.

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Unbalanced Force Unbalanced forces are: ► When two or more forces action on an object that do not cancel each other out. ► Causes a change in speed or direction. ► Can stop or start motion.

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Real World Examples Tug on a rope: These men are pulling at different forces…Which side do you think will win?

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Real World Examples You are correct! The man on the right will because he is using more force.

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Real World Examples Pushing a box: In your journal- write another example of forces

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Answer the questions on paper ► ► Equal forces….will this box move? ► ► What type of force is this?

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