• # question_answer ) A particle starts from rest. Its acceleration $(a)$ versus time $(t)$graph is as shown in the figure. The maximum speed of the particle will be: A) $110\,m/s$                 B)  55 m/sC)  550 m/s                      D)  660 m/s

Correct Answer: B

Solution :

The area under the acceleration - time graph gives change in velocity. Since, the particle starts with$u=0,$therefore, change in velocity = maximum speed$=\frac{1}{2}\times 10\times 11=55\frac{m}{s}.$ Hence, the correction option is [b].

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