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☖ Forums → Discussion Forum → Math Help
Math Help
2008-03-12, 11:28 PM #1
"An airplane is heading due north at 270 mph. An 18 mph wind blows from the northwest at an angle of 110 degrees clockwise from north. Find the ground speed and direction of the plane."

I am stumbled on this problem and I wonder if anyone could help me solve it.

The only diagram I've drawn upon this problem is in the attachment below.

I believe I have to find the resultant of the two vectors, but I can't seem to come across it.

So, can somebody help me?
Attachment: 18816/math 2.jpg (14,790 bytes)
Back again
2008-03-12, 11:36 PM #2
SOHCAHTOA, mother******, do you speak it?
SnailIracing:n(500tpostshpereline)pants
-----------------------------@%
2008-03-13, 12:09 AM #3
...aren't you in high school?
2008-03-13, 12:17 AM #4
here. I'm not completely sober and can't sleep at 3 in the ****ing morning, so I probably punched in some number wrongs. But here are the tools to solve it. If you can't follow along maybe you are KOP_AOEJedi and should go back and tend rabbits.

[http://img.photobucket.com/albums/v308/Echoness101/mth.jpg]
SnailIracing:n(500tpostshpereline)pants
-----------------------------@%
2008-03-13, 12:29 AM #5
for extra points, what if the plane is on a treadmill
Stuff
2008-03-13, 12:32 AM #6
would you get extra credit if you asked for the designers' wind tunnel analysis
2008-03-13, 12:50 AM #7
I can't find the viscosity of air other than at sea level Joncy, so I was going to just factor it by a thinning factor of 0.015 for 36 thousand feet.

<.<
>.>

(Or more accurately I am going to ... not.)
2008-03-13, 12:52 AM #8
But would an 18mph wind have full effect on an airplane? It's aerodynamic after all... obviously it would affect it's direction some, but not a whole 18mph worth.

Right?

Tell your teacher the question blows. And then kick him in the balls.
2008-03-13, 1:00 AM #9
who cares. I haven't sobered up yet and added a supplementory addition to my notes above

[http://img.photobucket.com/albums/v308/Echoness101/math2.jpg]

probably will regret this in the morning.
SnailIracing:n(500tpostshpereline)pants
-----------------------------@%
2008-03-13, 1:01 AM #10
I love it. Continue.
2008-03-13, 1:52 AM #11
easy. answer: 270 mph and north, silly.

also, poorly worded problem statement. w/evs. if what you mean is that (essentially) the plane is going north at 270 mph groundspeed w/o wind, then suddenly a wind at 18 mph appears, and you want to find the resulting airplane direction and groundspeed... then i'm sorry, your physics text is dumb, your physics teacher is dumb, or you dont understand the problem given to you.
2008-03-13, 3:40 AM #12
What if there are SNAKES on the plane?
2008-03-13, 3:46 AM #13
What echoman doesnt know is that I can still read deleted posts :)
mwuahaha
[01:52] <~Nikumubeki> Because it's MBEGGAR BEGS LIKE A BEGONI.
2008-03-13, 5:24 AM #14
Free's mom is curiously thin there.

>.>
nope.
2008-03-13, 5:33 AM #15
Originally posted by Baconfish:
Free's mom is curiously thin there.

>.>


fail.
2008-03-13, 7:52 AM #16
Originally posted by Baconfish:
Free's mom is curiously thin there.

>.>


Hahahaha.
2008-03-13, 8:38 AM #17
what the, where did echoman's brilliant drawings go?
2008-03-13, 11:08 AM #18
I can't express how ridiculously awesome this thread is.
"If you watch television news, you will know less about the world than if you just drink gin straight out of the bottle."
--Garrison Keillor
2008-03-13, 11:09 AM #19
Echoman totally has more he isn't posting.
2008-03-13, 11:21 AM #20
Hah, why did you delete those, Echo?
2008-03-13, 3:25 PM #21
I sobered up.
SnailIracing:n(500tpostshpereline)pants
-----------------------------@%
2008-03-13, 3:27 PM #22
They were awesome though.

:P
nope.

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