176 a. Dijin's velocity in meters/min is shown again in the graph above. Carefully describe how his velocity changes. Problems 1-162 and 1-163 each started with a rate of change. For example, Dijin's velocity describes how his position changes, while the rate in problem 1-163 focused on how the number of words being read changes. Now consider how these rates of change change themselves! Dijin started at 20 meters per second from 0 to 1.25 seconds, then decrease the velocity to 0 at 2 seconds. Dijin stopped from 2 to 3 seconds mark, then he increases his velocity from 3 to 4. Edit my response The rate at which the velocity changes is called acceleration. If Dijin's velocity is measured in meters per minute, what are the units of Dijin's acceleration? Explain. b. 20 16 12 Submit 8 On your paper, write a piecewise-defined function to represent Dijin's acceleration for 0 sts 4. C. 4 1 3 4

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