Unit 6
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12 Terms
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motion
change in position
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frame of reference
something that is not moving with respect to an observer that can be used to detect motion
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displacement
overall change in position
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Vector
a measurement that has both size and direction and may be represented by an arrow
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velocity
the speed of the object and its direction
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how does an arrow represent velocity
length= speed
the way arrow points= direction
the way arrow points= direction
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speed
to describe how fast something is going
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average speed
distance traveled/ time it takes
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constant speed
when an objects speed doesn’t change
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when does velocity change
when the speed changes, the direction of motion changes, or both
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acceleration
if the speed but not the direction of an object is changing, the object is accelerating
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calculating acceleration
final velocity-initial velocity divided by time
Note 
Flashcards (36)