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15 Cards in this Set
- Front
- Back
motion diagram
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a tool for the study of motion that uses a series of images to shoe the position of a moving object after equal time intervals
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operational definition
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defines a concept in terms of the procedure or operation used
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particle model
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a simplified version of a motion diagram in which the object in motion is replaced by a series of single points
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coordinate system
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a system used to describe motion that indicates where the zero point of the variable being studied is located and the direction in which the values of the variable increase.
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origin
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the point in a coordinate system at which the variables have a zero value
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position vector
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the arrow on a motion diagram that is drawn from the origin to the moving object
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scalar quantity
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a quantity that has only magnitude
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vector quantity
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a quantity that has both magnitude and a direction
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displacement
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the vector quantity that defines the distance and direction between two points
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time interval
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difference in time between two clock readings
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distance
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a scalar quantity that is the length, or size, of the displacement vector
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average velocity
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the ration of the change of position to the time interval during which that change occurred.
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average speed
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the ratio of total distance traveled to the time interval
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instantaneous velocity
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the speed and direction of an object at a particular instant in time
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average acceleration
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the change in average velocity divided by time
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