A train moves from one station to another in 2 hours time. Its speed-time graph during this motion i

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2.Motion in Straight Line

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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.............$km\, h^{-2}$

A

$140$

B

$160$

C

$100$

D

$120$

Solution

(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}$

Standard 11

Physics

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