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A projectile is projected with a speed of
P \( 40 \mathrm{~m} / \mathrm{s} \) at an angle \( \theta \) with horizontal such that

W \( \tan \theta=3 / 4 \). After \( 2 \mathrm{sec} \), the projectile is moving with speed \( v \) at an angle \( \alpha \) with horizontal then, \( \left(g=10 \mathrm{~m} / \mathrm{s}^{2}\right) \)
(1) \( \tan \alpha=\frac{1}{8} \)
(2) \( \cot \alpha=\frac{1}{8} \)
(3) \( v=30 \mathrm{~m} / \mathrm{s} \)
(4) \( v=25 \mathrm{~m} / \mathrm{s} \)
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