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Ch 11 quiz

vocab

QuestionAnswer
The study of motion mechanics
A system of objects that are not moving with respect to one another. This needs to be established to accurately describe the motion of something. frame of reference
Movement in relation to a frame of reference relative motion
How far something has moved, or the exact length/path between 2 points distance
Distance and direction of something from its starting point displacement
A quantity that has size or magnitude only scalar
A quantity that has both size/magnitude and direction vector
A student walks 5 m N, 5 m E, and 10 m S. What is her distance? 20 m
A student walks 5 m N, 5 m E, and 10 m S. What is her displacement? 7 m SE (square root of 50 using Pythagorean theorem - a=5 and b=5))
A student runs the 800 m in track, which is 2 full laps around the track. What is their distance and displacement? distance = 800 m displacement = 0 m (finish back where started)
The distance something travels in a certain amount of time speed
The distance and direction something travels in a certain amount of time velocity
Change in speed acceleration
In the metric system, what is the unit for distance? m or km
In the metric system, what is the unit for speed? m/s or km/h
Created by: tbrandt
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