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Physics Exam Chapter 3

Terms in this set (19)

Reference Point
Zero location in a coordinate system or frame of reference
Frame of Reference
Coordinate system used to define motion
Position
Separation between object and a reference point
Distance
The separation between two points, a scalar quantity
Scalar
Quantity, like distance, that has only a magnitude, or size
Vector
Quantity, like distance, that has only a magnitude, or size
Clock Reading
Time between event and a reference time, usually zero
Instantaneous Position
Position of object at specific time
Displacement
Change in position, a vector quantity
Time Interval
Difference in time between two clock readings
Average Velocity
Velocity measured over a finite time interval
Factor-Label Method
Dimensional Analysis
Constant Velocity
Velocity that does not change in time
Position-Time Graph
Graph of object's motion that shows how its position depends on clock reading, or time
Slope
Ratio of the vertical separation, or rise to the horizontal separation, or run
Speed
Ratio of distance traveled to time interval
Velocity
Ratio of change in position to time interval over which change takes place
Instantaneous Velocity
Slope of the tangent to the position time graph
Velocity Time Graph
Plot of velocity of object as a function of time
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