A) 2
B) \[2+\sqrt{2}\]
C) \[2-\sqrt{2}\]
D) \[2\pm \sqrt{2}\]
Correct Answer: B
Solution :
According to equation of motion \[h=\frac{1}{2}g{{t}^{2}}\] ... (i) \[\frac{h}{2}=\frac{1}{2}g\,\,{{(t-t)}^{2}}\] ... (ii) Solving Eqs. (i) and (ii). We get \[t=2\pm \sqrt{2}\,s\] \[t=(2+\sqrt{2})\,s\]You need to login to perform this action.
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