The acceleration of segment D is m/s2. Rank segments A, B , C from least accelerations to greatest acceleration. Least
Greatest

The ranking of acceleration from least to greatest is D < C <B <A.
Acceleration is defined as the change of velocity with time. The graph as shown is a velocity - time graph. The slope of this velocity - time graph is the acceleration.
The D part of the graph has a negative acceleration. The acceleration of the C portion of the graph is zero. Hence, the ranking of acceleration from least to greatest is D < C <B <A.
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