A) 1S
B) \[\sqrt{2}S\]
C) \[2\sqrt{2}S\]
D) 2S
Correct Answer: A
Solution :
From the equation of motion in verticle direction, \[t=\frac{u\sin \theta }{g}\,\,\,\left( as,\,\,\sin \theta =\sin {{45}^{o}}=\frac{1}{\sqrt{2}} \right)\] \[=\frac{5\sqrt{2}}{10\times \sqrt{2}}=\frac{1}{2}S\] Time of flight, \[T=2t=2\times \frac{1}{2}\] \[T=1S\]You need to login to perform this action.
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