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Two seconds after projection, a projectile is moving at \( 30^{\circ} \) above the horizontal, after one more
\( \mathrm{P} \) second it is moving horizontally. The magnitude of W its initial velocity is \( \left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right):- \)
(1) \( 20 \mathrm{~m} / \mathrm{s} \)
(2) \( 20 \sqrt{3} \mathrm{~m} / \mathrm{s} \)
(3) \( 20 \sqrt{6} \mathrm{~m} / \mathrm{s} \)
(4) \( 30 \mathrm{~m} / \mathrm{s} \)
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