Find time of flight of projectile thrown horizontally with speed \(...

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Find time of flight of projectile thrown horizontally with speed \( 10 \mathrm{~ms}^{-1} \) from a long inclined plane which makes
\( \mathrm{P} \) an angle of \( \theta=45^{\circ} \) with the horizontal.

W.
(1) \( \sqrt{2} \mathrm{sec} \)
(2) \( 2 \sqrt{2} \mathrm{sec} \)
(3) \( 2 \sec \)
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