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25 Cards in this Set
- Front
- Back
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Any change of position
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motion
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the measure of the force of gravity on an object
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weight
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a push or pull
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force
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a certain place described in comparison ot another place
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position
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a change in the speed or direction of an objects motion
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acceleration
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the force that keeps objects that are touching each other from slding past each other easily
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friction
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all the things around you that you can sense and use to describe motion
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frame of reference
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the metric unit of force
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newton
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a measure of an object;s change in postion during a unit of time
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speed
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motion described in relation to a frame of reference
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relative motion
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a force that pulls objects toward each other
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gravity
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In a race the _______________ of the runner on the track changes from moment to moment
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position
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Position is
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a certain point
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what is the speed of a cat that runs 6 meters in 3 seconds
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2 meters per second
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what is required to start motion
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force
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what is needed to give an object greater acceleration
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more force
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What happens to an object when the forces acting on it are balanced
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it does not accelerate
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what doe the stretch of spring scale measure
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the weight of the object pulling
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What happens when yhou are riding your bicycle on a smooth level surface and you stop pedaling
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you slowly slow down
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What is the name of the SI unit of force
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newtons
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How do you know a runner is in motion
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he changes position
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What is a frame of reference
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things that describes your motion
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What is speed
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a measure of an objects change in postion during a unit of time
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Give two frames of reference from which to describe a train ride
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if your on the outside the tain is moving if your on the inside the people are moving
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What is needed to make an object change its motion
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force
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