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The equation of motion of a particle is ...

The equation of motion of a particle is `s=2t^2+sin2t` , where s  is in metres and t  is in seconds. The velocity of the particle when its acceleration is `2m`/`sec^2`  , is
(a) `pi + sqrt(3)`m/sec            (b) `pi/3+sqrt(3)`m/sec (c) `(2pi)/3 + sqrt(3)`m/sec           (d)`pi/3 + 1/sqrt(3)`m/sec

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