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11 Cards in this Set
- Front
- Back
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the rate at which an object moves; speed depends on the distance traveled and the time taken to travel that distance
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SPEED
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a push or a pull; all forces have both size and direction
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FORCE
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an object's change in postion relative to a reference point over a period of time
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MOTION
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the force that results from combining all the forces exerted on an object
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NET FORCE
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a force that opposes motion between two surfaces that are touching
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FRICTION
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the amount of matter that something is made of; its value does not change with the object's location in the universe
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MASS
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the rate at which velocity changes; an object accelerates if its speed, direction, or both change
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ACCELERATION
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the speed of an object in a particular direction
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VELOCITY
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a measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe
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WEIGHT
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the SI unit of force
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NEWTON
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a force of all raction between objects that is due to their mass
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GRAVITY
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