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stracyl
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an object is thrown directly up with a velocity of 20.0 m/s and a d0=0. Determine how long it takes to get to the maximum height of 24.0 m
 one year ago
 one year ago
stracyl Group Title
an object is thrown directly up with a velocity of 20.0 m/s and a d0=0. Determine how long it takes to get to the maximum height of 24.0 m
 one year ago
 one year ago

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iNeedTheHelp Group TitleBest ResponseYou've already chosen the best response.0
Well we know the maximum height occurs when the velocity is at 0 (initial velocity)(time) = (0.5)a(t^2) Diviide both sides by 't velocity = at/2 time = 2v/a = (2)(20.0) / (9.81 m/s/s) time = 4.077sec
 one year ago

nubeer Group TitleBest ResponseYou've already chosen the best response.0
hmm i think something wrong in there.. @iNeedTheHelp can you tell which formula you have used?
 one year ago

iNeedTheHelp Group TitleBest ResponseYou've already chosen the best response.0
let me see hmm
 one year ago

nubeer Group TitleBest ResponseYou've already chosen the best response.0
if i am right u have used s=ut+0.5at^2.. right?
 one year ago

iNeedTheHelp Group TitleBest ResponseYou've already chosen the best response.0
Yeah is there a flaw in the equation?
 one year ago

nubeer Group TitleBest ResponseYou've already chosen the best response.0
well if you have use this formula , in it u=initial velocity. and in question initial velocity is given.
 one year ago

iNeedTheHelp Group TitleBest ResponseYou've already chosen the best response.0
Yes I already know that but what is wrong with this equation and sorry I'm kind of tired
 one year ago

nubeer Group TitleBest ResponseYou've already chosen the best response.0
its ok.. well your equation will be then s = 24t+0.5at^2
 one year ago

nubeer Group TitleBest ResponseYou've already chosen the best response.0
you missed 24t in your equation.
 one year ago

iNeedTheHelp Group TitleBest ResponseYou've already chosen the best response.0
ohhh wow thats a big one too sorry but @nubeer you can help him because I am going to bed
 one year ago

nubeer Group TitleBest ResponseYou've already chosen the best response.0
sure no problem :) have sweet dreams ok @stracyl formula is this s=ut+0.5at^2.. s=24, u = 20 a=9.81 24 = 20t+0.5(9.81)t^2 0.5(9.81)t^2 +20t 24 = 0 use quadratic formula and find the roots of t
 one year ago
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