A ball is projected from ground with a velocity $V$ at an angle $\theta$ to the vertical. On its path it makes an elastic collison with a vertical wall and returns to ground. The total time of flight of the ball is
A ball is projected from ground with a velocity $V$ at an angle $\theta$ to the vertical. On its path it makes an elastic collison with a vertical wall and returns to ground. The total time of flight of the ball is
- A
$\frac{{2v\sin \,\theta }}{g}$
- B
$\frac{{2v\cos \,\theta }}{g}$
- C
$\frac{{v\sin \,2\theta }}{g}$
- D
$\frac{{v\cos \,\theta }}{g}$
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