A) \[\frac{8{{u}^{2}}}{g}\]
B) \[\frac{3{{u}^{2}}}{g}\]
C) \[\frac{4{{u}^{2}}}{g}\]
D) \[\frac{5{{u}^{2}}}{g}\]
Correct Answer: C
Solution :
\[{{v}^{2}}={{u}^{2}}+2gh\] or \[{{(3u)}^{2}}={{u}^{2}}+2gh\] or \[h=\frac{4{{u}^{2}}}{g}\]
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