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4
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is an example of a contact force between two surfaces that are touching
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6
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is a force that pulls objects toward Earth
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8
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is the combination of all the forces acting on an object
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9
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is the tendency of all objects to resist any change in motion
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1
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a force when an object travels around another object in space
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2
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unit used to express force
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3
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forces can also act on objects that are at a
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5
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Everything has this
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7
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forces that both have a size and a direction
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10
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unbalanced forces produce change in an objects directions and speed
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