webassign.net can Dadt Season 14 Episode 4-Portrait of Francine\'s Genitals !. c
ID: 3279012 • Letter: W
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webassign.net can Dadt Season 14 Episode 4-Portrait of Francine's Genitals !. cw 2: Motion 1-0 Ch 2: Motion in 1-D (Homework) Phys205, section 001, Instructor Ezana Negus rrent Score:-11 Due : Thursday, September 7 2017 11:59 AM EDT Print Assignment tension Requests, Question Total 1-11(0.0%) Points signment Submission or this assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer. signment Scoring our last submission is used for your score. My Notes Ask Your Teache After what time interval does it strike the ground? A ball is thrown directly downward with an initial speed of 7.60 m/s from a height of 30.6 m. Need Help? Watch Tath to uter Submit Assignment Save Assignment Progress Home My Assignments Extension Requeat Webhssigrd4001Explanation / Answer
considering -ve y axis as pointing downwards
initial velocity, u = -7.6 m/s
displacement to eb covered, s = -30.6
acceleration due to gravity = -g
time taken for the travel = t
so using
s = ut + at^2
-30.6 = -7.6t - 0.5*9.81t^2
4.9t^2 + 7.6t - 30.6 = 0
solving for t
t = 1.841 s
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