Last Cal Thread (trig Is Next) - Page 1

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Last Cal Thread (trig Is Next)

Good [+1]Toggle ReplyLink» No_Comply replied on Wed Oct 29, 2008 @ 1:05pm


Coolness: 84870	so,The velocity of a sky diver 't' seconds after jumping is given by: v(t) = 80(1-e^-0.2t). After how many seconds is the velocity 70 ft/s? so i get: 70 = 80(1-e^-0.2) -1/8 = -e^-0.2t ln1/8 = -0.2t -2.0794 (rounded) = -0.2t t = 10.4 seconds (approx.) This look about right? Flo, lookin in your direction xD

	I'm feeling gettin more ink soon right now..

Good [+1]Toggle ReplyLink» Gamos replied on Wed Oct 29, 2008 @ 3:05pm


Coolness: 93430	you know, you can just throw the answer you got into the original equation, v(t) = 80(1-e^-0.2t), and see if V(t) = 70

	I'm feeling empty right now..

Good [+1]Toggle ReplyLink» No_Comply replied on Wed Oct 29, 2008 @ 3:07pm


Coolness: 84870	yes i know, but its the steps that i want to make sure on as well as the reply.

	I'm feeling gettin more ink soon right now..

Good [+1]Toggle ReplyLink» Gamos replied on Wed Oct 29, 2008 @ 3:13pm


Coolness: 93430	theres an infinte number of possible wrong answers. Theres only one right answer. So whats the probability you got the right answer by doing the steps wrong?

	I'm feeling empty right now..

Good [+1]Toggle ReplyLink» No_Comply replied on Wed Oct 29, 2008 @ 3:34pm


Coolness: 84870	go troll elsewhere please. If you're having a bad day, go find someone who cares to hear your rhetorical shit.

	I'm feeling gettin more ink soon right now..

Good [+1]Toggle ReplyLink» Gamos replied on Wed Oct 29, 2008 @ 3:38pm


Coolness: 93430	Im in a great mood? Is that the way you think of me? As a troll? That actually really kind of hurts...I mean if i was trying to troll, and i got to you, that might be cause for celebration, but i really wasnt trying to.

	I'm feeling empty right now..

Good [+1]Toggle ReplyLink» flo replied on Wed Oct 29, 2008 @ 5:52pm


Coolness: 146260	yes that's it :) 10.4 seconds, the computation steps are right. which means in 10 seconds the skydiver already falls down at over 80 kmph !

	I'm feeling phd powa !!! right now..

Good [+1]Toggle ReplyLink» Screwhead replied on Wed Oct 29, 2008 @ 5:56pm


Coolness: 685525	And that's when the two trains meet?

	I'm feeling over 9000 right now..

Good [+1]Toggle ReplyLink» flo replied on Wed Oct 29, 2008 @ 6:12pm


Coolness: 146260	it depends on the captain's age !

	I'm feeling phd powa !!! right now..

Good [+1]Toggle ReplyLink» IMDeadAlready replied on Fri Oct 31, 2008 @ 5:20pm


Coolness: 45560	70 = 80(1-e^-0.2) 70/80 =1-e^-.2t .875-1 = -e^.2t -.125(-1)=-e^.2t(-1) ln.125 = .2t t = -10.397207708399179641258481821873 i dunno Update » IMDeadAlready wrote on Fri Oct 31, 2008 @ 5:23pm whoops overlooked that it was -.2t I believe you did it right

	I'm feeling almost scott free right now..

Last Cal Thread (trig Is Next)

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