A particle located at \( x=0 \) at time \( t=0 \), starts P moving ...

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A particle located at \( x=0 \) at time \( t=0 \), starts
P moving along the positive \( x \)-direction with a

W velocity ' \( v \) ' which varies as \( v=\alpha \sqrt{x} \), then velocity of particle varies with time as: ( \( \alpha \) is a constant)
(1) \( \quad v \propto t \)
(2) \( v \propto t^{2} \)
(3) \( v \propto \sqrt{t} \)
(4) \( v= \) constant
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