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Question Number 50973 by Necxx last updated on 22/Dec/18

Answered by mr W last updated on 22/Dec/18

see Q50913.  t_1 =2e(√((2h)/g))=2((3/4))(√((2×20)/(10)))=3 seconds

$${see}\:{Q}\mathrm{50913}. \\ $$$${t}_{\mathrm{1}} =\mathrm{2}{e}\sqrt{\frac{\mathrm{2}{h}}{{g}}}=\mathrm{2}\left(\frac{\mathrm{3}}{\mathrm{4}}\right)\sqrt{\frac{\mathrm{2}×\mathrm{20}}{\mathrm{10}}}=\mathrm{3}\:{seconds} \\ $$

Commented by Necxx last updated on 25/Dec/18

oh.... i have not come across this  formula.Its really precise.Thanks

$${oh}....\:{i}\:{have}\:{not}\:{come}\:{across}\:{this} \\ $$$${formula}.{Its}\:{really}\:{precise}.{Thanks} \\ $$

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