My Math Forum After it lands on Earth, the distance the space shuttle travels is given by

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May 18th, 2017, 12:20 PM   #1
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After it lands on Earth, the distance the space shuttle travels is given by

Have gotten help figuring these out, but unsure how to set up the last one. Thanks for any help or direction

The runway at Edwards Air Force base is 15,000 feet long. What is the maximum velocity the shuttle can have at touchdown and still stop on the runway?
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 May 18th, 2017, 12:47 PM #2 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 12,127 Thanks: 801 Joe, why are you trying this problem?
May 18th, 2017, 01:11 PM   #3
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Quote:
 Originally Posted by Denis Joe, why are you trying this problem?
Hi I am hoping my answer should be that it will help me to answer future problems asking this question, but it's also because sometimes these questions on this program comes up again on quiz.

sorry if my response does not answer the Question your're asking me, thanks for still wanting to still help me .

 May 18th, 2017, 03:24 PM #4 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 12,127 Thanks: 801 It's not that, Joe; seems to me this is like you just learned how to ride a tricycle, and now want to pilot a supersonic jet...get my drift?
May 19th, 2017, 12:22 PM   #5
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Quote:
 Originally Posted by Denis It's not that, Joe; seems to me this is like you just learned how to ride a tricycle, and now want to pilot a supersonic jet...get my drift?
Oh okay I am sorry if this is too easy of a problem and that the answer is staring me the face thanks for at least giving the thread a look I will try to find help elsewhere hopefully

May 19th, 2017, 12:26 PM   #6
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Quote:
 Originally Posted by GIjoefan1976 Oh okay I am sorry if this is too easy of a problem and that the answer is staring me the face....
Joe, what I said is exactly the opposite of that!

May 19th, 2017, 12:35 PM   #7
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Quote:
 Originally Posted by Denis Joe, what I said is exactly the opposite of that!
Oh okay Then Thanks sooo much Yeah it is kinda silly how they ask these questions but yet maybe this "formula" works for figuring out something other than the flying of a supersonic jet

since it's "just" a graphing parabola problem

 May 19th, 2017, 01:04 PM #8 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 12,127 Thanks: 801 Joe, here's the situation (as I see it): if you had been introduced to that problem in a classroom, the teacher would have explained (using chalk and blackboard, something we can't use here!) how to solve the problem; then you would try to solve it, and if you were not able to get the given solution, then you would go to a help site (such as this one), posted the problem and show where you're stuck. I don't think you should pick problems at random and post them at help sites. I may be wrong, so I'll let someone else here step in and give me hell if so. OK?
May 19th, 2017, 02:15 PM   #9
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Quote:
 Originally Posted by Denis Joe, here's the situation (as I see it): if you had been introduced to that problem in a classroom, the teacher would have explained (using chalk and blackboard, something we can't use here!) how to solve the problem; then you would try to solve it, and if you were not able to get the given solution, then you would go to a help site (such as this one), posted the problem and show where you're stuck. I don't think you should pick problems at random and post them at help sites. I may be wrong, so I'll let someone else here step in and give me hell if so. OK?

Yeah, I understand I tried to be in a traditional but it was/is to fast paced for me. oh okay I am just stuck on where I would but if I am even close the -6, and the 1.5 as I get at least that the 15000= but where to plug in the other numbers is where I am lost...

oh I am sorry That I made it appear that I was just randomly posting problems I am gratefully but sadly in a individually paced online course so this is one of the problems required, so I was able to get help solving the ones in green but unclear about the last one. my brain just can't see the connections YET I hope.

but I understand if it's better for me to hopefully get help with someone in person, rather than here with this problem, thanks for at least talking to me and telling me to move on

Last edited by GIjoefan1976; May 19th, 2017 at 02:18 PM.

 May 21st, 2017, 03:02 AM #10 Math Team   Joined: Jan 2015 From: Alabama Posts: 3,104 Thanks: 850 You already have that d= 0.5v+ v^2/24. If the runway is 15000 feet long, then d can be anything less than that. The largest d can be is 15000 so the question is just asking you to solve the quadratic equation v^2/24+ 0.5v= 15000.

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