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You are not logged in. #426 20060220 05:01:50
Re: Problems and SolutionsI don't know if it was appropriate to say QED in that, but it's just really cool to say. ^_^ Why did the vector cross the road? It wanted to be normal. #427 20060220 15:39:00
Re: Problems and Solutionsmathsyperson, you are correct! Character is who you are when no one is looking. #428 20060220 16:52:50
Re: Problems and SolutionsBy mathimatical law, you can only say QED when you start out with "Pf" or "Proof". But we'll let you go with a warning this time. "In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..." #429 20060220 17:37:08
Re: Problems and SolutionsProblem # k + 97 Character is who you are when no one is looking. #430 20060221 01:49:11
Re: Problems and Solutions
Why did the vector cross the road? It wanted to be normal. #431 20060221 10:56:23
Re: Problems and SolutionsOn k + 89, I meant to multiply by 3, but then I still would be wrong. igloo myrtilles fourmis #432 20060221 12:07:51
Re: Problems and SolutionsOn k + 89, I was below with this 3 times correction still by factor of 1.062801932. igloo myrtilles fourmis #433 20060221 13:32:25#434 20060221 16:20:59
Re: Problems and SolutionsSolution to Problem # k + 97 Character is who you are when no one is looking. #435 20060221 17:13:40
Re: Problems and SolutionsProblem # k + 98 Character is who you are when no one is looking. #436 20060222 02:37:38
Re: Problems and Solutionslol. You love this instantaneous velocity. I stand by my k+97 solution(s). There was nothing in the question that required the solution agreed upon. Distance travelled does not prove constant velocity during a time period. I have yet to see an instance of infinite acceleration either. My equations describe the motion of both people as correctly as your assumptions. Last edited by irspow (20060222 02:42:33) #437 20060222 02:46:47
Re: Problems and SolutionsI concede you're correct too, irspow! The time given to solve the problem was about a minute! I thought the best way to do that was the way I solved Character is who you are when no one is looking. #438 20060222 02:49:19
Re: Problems and SolutionsThanks for the concession. lol. Interesting how both are correct and yet different with a problem stated as such, no? #439 20060222 04:06:44#440 20060222 16:09:37
Re: Problems and SolutionsCharacter is who you are when no one is looking. #441 20060222 16:14:09
Re: Problems and SolutionsProblem # k + 99 Character is who you are when no one is looking. #442 20060223 01:40:00
Re: Problems and SolutionsI love that kind of problems. IPBLE: Increasing Performance By Lowering Expectations. #443 20060223 02:29:04
Re: Problems and SolutionsCharacter is who you are when no one is looking. #444 20060223 08:44:22
Re: Problems and SolutionsYou're right, irspow, it would be more natural to model the man as having a constant acceleration like that, but ganesh did say that the men were moving towards each other, so the second part of your k+97 solution was not needed. Why did the vector cross the road? It wanted to be normal. #445 20060223 09:13:42
Re: Problems and SolutionsI agree mathsyperson. I nitpick too much sometimes. I wasn't trying to imply anything other than the real problems I was having with the solution and nothing more. I will admit it is a little bit of a petpeeve of mine that velocities are vectors and rarely treated as such. I guess it's my physics background. All I could think about for k+98 was all of the other real considerations that would be needed to solve such a problem in real life versus the friction free, force free, instantaneous velocity, infinite acceleration capable trains in question. Please excuse me for these faults, I meant no harm. #446 20060223 15:55:22
Re: Problems and SolutionsProblem # k + Character is who you are when no one is looking. #447 20060223 16:16:31
Re: Problems and Solutions
"In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..." #448 20060223 17:59:02
Re: Problems and SolutionsRicky, try again! Character is who you are when no one is looking. #449 20060223 18:22:48
Re: Problems and SolutionsFor the problem K+100 the answer should be 34.. #450 20060223 18:23:24
Re: Problems and SolutionsAfter a long time, here's solution to Problem # k + 42 Character is who you are when no one is looking. 