The line from \( A \) to \( B \) makes an angle of \( 30^{\circ} \) with the horizontal. The...

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The line from \( A \) to \( B \) makes an angle of \( 30^{\circ} \) with the horizontal. The initial velocity of the object is : (take \( g=10 \mathrm{~m} / \mathrm{s}^{2} \) ) (Given that: \( \mathrm{t}=3 \mathrm{sec} \) )
(a) \( 15 \sqrt{3} \mathrm{~m} / \mathrm{s} \)
(b) \( 15 \mathrm{~m} / \mathrm{s} \)
(c) \( 10 \sqrt{3} \mathrm{~m} / \mathrm{s} \)
(d) \( 25 / \sqrt{3} \mathrm{~m} / \mathrm{s} \)
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