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Acceleration vs. time graphs tell us about an objectâs velocity in the same way that velocity vs. time graphs tell us about an objectâs displacement. The change in velocity in a given time interval is equal to the area under the graph during that same time interval.
Figure 1: Graph of velocity vs. time for a car undergoing constant acceleration. Because the velocity changes at a constant rate, the slope of the velocity vs. time graph is constant. Notice the equation of the line that fits the velocity vs. time data: y = mx + b. where m is the slope and b is the y-intercept. Logger pro will assign values to m and b in order to best fit the data.