Engineering, 13.09.2019 23:30 datbih12345
Arocket developed by an amateur was traveling upwards at a velocity given by v = (11 + 0.2s) m/s, where s is in meters. determine the time for the rocket to reach an altitude of s = 80 m. initially, s = 0 when t = 0. [hint: obtain initial velocity].
Answers: 1
![\int_{0}^{80} \frac{ds}{(11+0.2s)}=\int_{o}^{t} dt\\\\\frac{1}{0.2}[ln(11+0.2s)]_{0}^{80}=(t-0)\\\\5\times (ln(11+0.2\times 80)-ln(11))=t\\\\\therefore t=4.4897seconds](/tpl/images/0230/4395/44e99.png)
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Arocket developed by an amateur was traveling upwards at a velocity given by v = (11 + 0.2s) m/s, wh...
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