Question Number 136157 by BHOOPENDRA last updated on 19/Mar/21
Answered by mr W last updated on 19/Mar/21
$${v}_{\mathrm{1}} =\sqrt{{u}^{\mathrm{2}} +\mathrm{2}{gh}_{\mathrm{1}} } \\ $$$${v}_{\mathrm{2}} =\sqrt{\mathrm{2}{gh}_{\mathrm{2}} } \\ $$$${e}=\frac{{v}_{\mathrm{2}} }{{v}_{\mathrm{1}} }=\sqrt{\frac{{h}_{\mathrm{2}} }{\frac{{u}^{\mathrm{2}} }{\mathrm{2}{g}}+{h}_{\mathrm{1}} }} \\ $$