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27-05-2018
Mathematics

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27-05-2018

73.32. ft/sec is the correct answer

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27-05-2018

[tex]v=\sqrt{64h}=\sqrt{64}\cdot\sqrt{h}=8\sqrt{h}\\\\h=84\ ft.\\\\substitute\\\\v=8\sqrt{84}\approx8\cdot9.1651\approx73.32[/tex]

[tex]Answer:\ 73.32\ ft/sec[/tex]

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