Chapter 9 Forces and Motion

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Chapter 9Forces and Motion
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If you add force to an open door it
_________________.
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Moves
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The _____________ of an object is its position.
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Location
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When an object rubs against another object it
creates _______________.
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Friction
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When an object changes __________ it is in motion.
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Position
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The pull of ________ on an object is that
objects weight.
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Gravity
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Scientists measure _________ in newtons.
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Weight
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The __________ between two places is called
distance.
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Length
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A __________ measures weight in the English
system.
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Pound
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A cheetah can run at a greater __________ than a
person can.
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Speed
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Things fall to Earth because of ______________.
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Gravity
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It would be hard to skate on a gravel road
because the gravel increases ___________.
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Friction
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To measure speed you need to measure _______ and
_______.
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Time and Distance
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The force of _________ can slow things down.
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Friction
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If you can run 6 miles in an hour how far can you
run in one and one half hours?
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9 miles
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On what planet would you weigh the least?
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Pluto