If the initial velocity in horizontal direction of a projectile is unit vector \( \hat{i} \) and...

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If the initial velocity in horizontal direction of a projectile is unit vector \( \hat{i} \) and the equation of trajectory is \( y=5 x(1-x) \).
The \( y \) component vector of the initial velocity is (Take \( g=10 \mathrm{~m} / \mathrm{s}^{2} \) )
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