Question
A train moves from one station to another in $2$ hours time. Its speed-time graph during this motion is shown in the figure. The maximum acceleration during the journey is.............$km\, h^{-2}$
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Answer
(b) Maximum acceleration will be represented by $CD$ part of the graph
Acceleration $ = \frac{{dv}}{{dt}} = \frac{{(60 - 20)}}{{0.25}} = 160\;km/{h^2}$
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