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The acceleration-time graph of a particle moving in a straight line is as shown in figure. The velocity of the particle at time `t = 0` is `2 m//s`. T

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The acceleration-time graph of a particle moving in a straight line is as shown in figure. The velocity of the particle at time `t = 0` is `2 m//s`. The velocity after `2` seconds will be
image
A. `6m//s`
B. `4m//s`
C. `2m//s`
D. `8m//s`
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Correct Answer - A
`v(2)=v(0)+` area under `a-t` graph from `t=0` to `t=2`
`=2+(1)/(2)(2)(4)=6m//s`
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