A) \[\sqrt{{{u}^{2}}-2g\,h}\]
B) \[2\,g\,\,h\]
C) \[\sqrt{2\,g\,\,h}\]
D) \[\sqrt{{{u}^{2}}+2\,g\,\,h}\]
Correct Answer: D
Solution :
Since, velocity is vector quantity, its horizontal component is u and vertical component is v and from equation of motion \[v=\sqrt{2\,gh}\] Taking the resultant of u and v \[R=\sqrt{{{u}^{2}}+{{v}^{2}}}\] \[=\sqrt{{{u}^{2}}+2\,gh}\]
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