Velocity in \(m/s\) of a particle moving along \(x-\)axis varies with time as \(v=(10+5t-t^{2})\...

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Velocity in \(m/s\) of a particle moving along \(x-\)axis varies with time as \(v=(10+5t-t^{2})\). At time \(t=0, x=0.\)  Acceleration of particle at \(t=2\ s\) is \(x\ m/s^{2}\), then value of \(x\) is
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