course Phy 121
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We calculated the change in velocity by subtracting the initial velocity from the final velocity. Next, take the change in velocity and divide by the duration of time.
The result is the average rate of change of velocity or average acceleration.
To arrive at the displacement, we must find the average velocity for a particular time interval then multiply by the duration of time.
In terms of the meanings of altitudes, area, slope and width, how does a velocity vs. clock time trapezoid represent change in position and acceleration?
The slope of the graph (the line on the top of the trapezoid) represents the average acceleration. The area of the trapezoid (average height times width of base) will give you the change in position.
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Good. Let me know if you have questions.