Civi Engineering x https://edugen.wileyplus.com/edugen/student/mainfr.uni UofM G

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Civi Engineering x https://edugen.wileyplus.com/edugen/student/mainfr.uni UofM G Google a com Yo PRNSL Email Assignment ORION Chapter 02, Problem 049 A hot-air balloon is ascending at the rate of 12 m/s, and is 78 m above the ground when apackage is dropped over the side. (a) How long does the package take to reach the round" (b) wth hat speed does it hit the ground Units (a) Number (b) Number cuck if you would like to show work for this question openshow work By accessing this Assistance, you wiu learn whae you earn points based on the point potential Paley set by your instruetar. Question SAVE LATER 0 of 5 used Question Attempts Earn Maximum Points avalable only f you Copyright o 2000-2017 by John wary sons, inc or related companies rights reserved rivacy e2000-201zuohn wuecs sens unc. All Rights Reserved. A Division orleon sons, unc ON 10050 edugenW shared assign A 7:3 MacBook Air

Explanation / Answer

Here,

u = 12 m/s

h = 78 m

a)let the time taken is t

Using second equation of motion

- 78 = 12 * t - 0.5 * 9.8 * t^2

solving for t

t = 5.39 s

time taken is 5.39 s

b) speed of package at ground = |12 - 5.39 * 9.8|

speed of package at ground = 40.8 m/s

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