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Unit Two Vocab

Physical Science

QuestionAnswer
motion a change in an object's position relative to a reference point
distance the length an object travels, measured in SI units of meters
displacement distance and direction of an object's change in position from the starting point
speed distance an object travels oer unit of time
velocity the speed and direction of a moving object
reference point A basis or standard for evaluation, assessment, or comparison; a criterion
vector quantity Quantities which possess two fundamental characteristics, namely magnitude and direction
scalar quantity Quantities that have only magnitude, eg mass, temperature and volume
constant speed speed that does not change
average speed the total distance traveled divided by the total time elapsed
instantaneous speed the speed of an object is the magnitude of its velocity (the rate of change of its position); it is thus a scalar
acceleration rate of change of velocity; can be calculated by dividing the change in the velocity by the time it takes the change to occur
deceleration a decrease in rate of change
Created by: viavia
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