A) \[1\text{ }cm/{{s}^{2}}\]
B) \[\text{2 }cm/{{s}^{2}}\]
C) \[\text{3 }cm/{{s}^{2}}\]
D) \[\text{6 }cm/{{s}^{2}}\]
Correct Answer: D
Solution :
Slope of \[v-t\] graph represents acceleration. Sir of \[v-t\] graph is maximum during time interval \[30s\]to\[40s\]. \[\therefore \]Maximum acceleration \[=\frac{80-20}{40-30}=\frac{60}{10}\] \[=6cm/{{s}^{2}}\]
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