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(CNN)   If train A leaves the station at 7:45 AM traveling east at 45 mph and train B leaves a different station at 8:00 AM traveling west, at what time will they crash injuring seven people in MO?   (cnn.com) divider line 55
    More: Scary, Missouri, bridge collapses, trains  
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2600 clicks; posted to Main » on 25 May 2013 at 12:00 PM (1 year ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2013-05-25 11:32:46 AM  
I was told there would be no math
 
2013-05-25 12:02:37 PM  
They won't, one leaves from Moscow and the other from Houston. Trains don't cross oceans.

/Or didn't I get to pick where they left from?
 
2013-05-25 12:05:16 PM  
God damn it, Yukari!
 
2013-05-25 12:08:17 PM  
Union Pacific train t-bones Burlington Northern train at intersection.  This is a trigonometry question.
 
2013-05-25 12:12:39 PM  
incomplete data to determine solution subby. need to know distance between a and b points of departure and speed of train b
 
2013-05-25 12:13:13 PM  

King Something: God damn it, Yukari!


At least there wasn't a bus involved.
 
2013-05-25 12:13:44 PM  
www.enemyplanet.com
 
2013-05-25 12:13:44 PM  
4.bp.blogspot.com
 
2013-05-25 12:14:12 PM  
How fast was train B moving?
This is important.
 
2013-05-25 12:15:17 PM  

Hobodeluxe: incomplete data to determine solution subby. need to know distance between a and b points of departure and speed of train b


--- Came to say this.
Good night and have a pleasant tomorrow!
 
2013-05-25 12:15:43 PM  
Next Tuesday?
 
2013-05-25 12:19:39 PM  
If train B would have made that left in Albuquerque we wouldn't be having this discussion.
 
2013-05-25 12:20:25 PM  

Hobodeluxe: incomplete data to determine solution subby. need to know distance between a and b points of departure and speed of train b


...and the acceleration of each train from v0a=v0b=0 to v1a=45mph and v1b.
 
2013-05-25 12:28:56 PM  
The correct answer is 63 minutes past potato.
 
2013-05-25 12:38:36 PM  
We have ways of shutting that whole thing down here in MO.

/glad it wasn't an Amtrak train--I had friends on one of those yesterday
 
2013-05-25 12:40:22 PM  
Sheesh, already this thread has turned into a complete train wr.... oh.
 
2013-05-25 12:44:26 PM  
OK.. this is a trick question since Train A left New York, and Train B left San Jose, CA.. so in theory they would never meet..  unless the article actually said where these trains left from and me being a real Smarta** decided to make this comment without actually reading it.. if that is the case then I will look REAL stupid... and since I get that a lot I am not going to argue the fact...

also, as mentioned.. HOW FAST was Train B going?
 
2013-05-25 12:48:47 PM  

Thelyphthoric: Sheesh, already this thread has turned into a complete train wr.... oh.


Someone is going to try to solve physicsfailmitter's headline question, and is going to mix minutes units and mph units. And then we'll all point and laugh.
 
2013-05-25 01:01:10 PM  
i7.tinypic.com
 
2013-05-25 01:02:20 PM  
 
2013-05-25 01:07:14 PM  

remus: [www.enemyplanet.com image 600x480]


That can't possibly be real.
 
2013-05-25 01:10:59 PM  

MFAWG: remus: [www.enemyplanet.com image 600x480]

That can't possibly be real.


http://xkcd.com/verizon/
 
2013-05-25 01:19:20 PM  
Lindsay Lohan leaves Rehab at 11:30am

www.stoskel.com

Amanda Bynes leaves the psych ward at 12:12 pm texting

stupidcelebrities.net

So, how many comments would an epic train wreck of this proportion generate in a Fark thread?
 
2013-05-25 01:21:40 PM  

derpy: MFAWG: remus: [www.enemyplanet.com image 600x480]

That can't possibly be real.

http://xkcd.com/verizon/


Holy. shiat.

I barely gradiduated high skools, and that was hilarious.
 
2013-05-25 01:25:44 PM  
Not enough information.  We need to know how fast train B was traveling, and the distance between the stations.
 
2013-05-25 01:31:43 PM  
Answer: early Saturday morning, according to TFA.
 
2013-05-25 01:55:38 PM  

remus: [www.enemyplanet.com image 600x480]


It's too bad that whoever made that misread it as exp(2*pi) rather than exp(i*pi).  exp(i*pi) is -1, so the total is 0.002.
 
2013-05-25 02:04:12 PM  

puddleonfire: Hobodeluxe: incomplete data to determine solution subby. need to know distance between a and b points of departure and speed of train b

--- Came to say this.


Same here.
 
2013-05-25 02:06:46 PM  
Well, I  managed to get my Grammar/Spelling Police work done in the article's commentary... (dusting off hands)

Nothing to see here, folks...(mutter mutter...'fright trains' indeed...)

Obligatory 'Unbreakable' reference? About time we shook hands?
 
2013-05-25 02:06:56 PM  

wallish: remus: [www.enemyplanet.com image 600x480]

It's too bad that whoever made that misread it as exp(2*pi) rather than exp(i*pi).  exp(i*pi) is -1, so the total is 0.002.


Dollars, or cents?
 
2013-05-25 02:13:14 PM  
CNN REPORTS: A SECOND TRAIN HAS HIT THE OVERPASS
 
2013-05-25 02:18:11 PM  
Where will they bury the survivors?
 
2013-05-25 02:21:36 PM  
Not sure the Laws of Physics apply in MO.
 
2013-05-25 02:39:06 PM  
The overpass collapsed when one of the trains struck a pillar, Scott County Sheriff Rick Walters said.

Vehicle sticking bridge plus collapse trifecta in play?
 
2013-05-25 02:45:43 PM  

Rabid Badger Beaver Weasel: The overpass collapsed when one of the trains struck a pillar, Scott County Sheriff Rick Walters said.

Vehicle sticking bridge plus collapse trifecta in play?


I'm ashamed to live in a country where our infrastructure can't withstand being hit by a derailed train. Our politicians should be ashamed of themselves.
 
2013-05-25 03:14:47 PM  

umad: Rabid Badger Beaver Weasel: The overpass collapsed when one of the trains struck a pillar, Scott County Sheriff Rick Walters said.

Vehicle sticking bridge plus collapse trifecta in play?

I'm ashamed to live in a country where our infrastructure can't withstand being hit by a derailed train. Our politicians should be ashamed of themselves.


i1222.photobucket.com
 
2013-05-25 03:54:54 PM  

umad: Rabid Badger Beaver Weasel: The overpass collapsed when one of the trains struck a pillar, Scott County Sheriff Rick Walters said.

Vehicle sticking bridge plus collapse trifecta in play?

I'm ashamed to live in a country where our infrastructure can't withstand being hit by a derailed train. Our politicians should be ashamed of themselves.


Trains can impart a huge amount of kinetic energy into things they hit, so I can accept a small overpass not being able to withstand a train. Based on the overpass in question (article with picture) it doesn't look substantial enough to absorb the impact from a freight train.

A road vehicle being able to trigger a complete structural failure on a much more substantial bridge spanning a river, on the other hand, is shameful.
 
2013-05-25 03:55:03 PM  

GreatGlavinsGhost: umad: Rabid Badger Beaver Weasel: The overpass collapsed when one of the trains struck a pillar, Scott County Sheriff Rick Walters said.

Vehicle sticking bridge plus collapse trifecta in play?

I'm ashamed to live in a country where our infrastructure can't withstand being hit by a derailed train. Our politicians should be ashamed of themselves.

[i1222.photobucket.com image 400x525]


If you think I'm being serious you're an idiot.
 
2013-05-25 03:58:53 PM  

Glendale: A road vehicle being able to trigger a complete structural failure on a much more substantial bridge spanning a river, on the other hand, is shameful.


Because physics is different for loaded semis than it is for trains. Your ignorance is shameful.
 
2013-05-25 04:06:44 PM  
GreatGlavinsGhost:

[i1222.photobucket.com image 400x525]

We are not appeasrsed.

/Amused,  but not appeasrsed.
 
2013-05-25 04:22:04 PM  

umad: Glendale: A road vehicle being able to trigger a complete structural failure on a much more substantial bridge spanning a river, on the other hand, is shameful.

Because physics is different for loaded semis than it is for trains. Your ignorance is shameful.


No, actually the physics won't change. Be it a train, semi, or asteroid, they all have kinetic energy while in motion that can be calculated the same way.

/Would you like to know more?
 
2013-05-25 04:27:44 PM  

Glendale: No, actually the physics won't change. Be it a train, semi, or asteroid, they all have kinetic energy while in motion that can be calculated the same way.


Then why are you so surprised when a heavy farking truck imparts a huge amount of kinetic energy into the load-bearing supports of a structure causes it to fall down?
 
2013-05-25 04:28:19 PM  
*and causes...
 
2013-05-25 05:02:17 PM  

umad: Glendale: No, actually the physics won't change. Be it a train, semi, or asteroid, they all have kinetic energy while in motion that can be calculated the same way.

Then why are you so surprised when a heavy farking truck imparts a huge amount of kinetic energy into the load-bearing supports of a structure causes it to fall down?


Because bridges frequently take hits from oversize road vehicles without collapsing. Damaged to the point of requiring demolition (pictures of excavator booms exceeding bridge height come to mind), sure, but "whoops bridge fell over" is less common than actual bridge strikes. If every bridge that got hit fell down there probably wouldn't be any bridges left.
 
2013-05-25 05:05:52 PM  
That's a fargin silly question.  http://youtu.be/7zUtnsNPci4?t=1m18s
 
2013-05-25 06:53:41 PM  

Glendale: umad: Glendale: No, actually the physics won't change. Be it a train, semi, or asteroid, they all have kinetic energy while in motion that can be calculated the same way.

Then why are you so surprised when a heavy farking truck imparts a huge amount of kinetic energy into the load-bearing supports of a structure causes it to fall down?

Because bridges frequently take hits from oversize road vehicles without collapsing. Damaged to the point of requiring demolition (pictures of excavator booms exceeding bridge height come to mind), sure, but "whoops bridge fell over" is less common than actual bridge strikes. If every bridge that got hit fell down there probably wouldn't be any bridges left.


I'm shocked that they don't collapse every time when the non load-bearing parts are hit. That is farking amazing! It is almost like the support struts perform a different function than the deck. If every bridge that got hit was hit on the support struts it would be a very different story.
 
2013-05-25 06:53:52 PM  
No foxxy love?
 
2013-05-25 07:08:17 PM  

umad: I'm shocked that they don't collapse every time when the non load-bearing parts are hit. That is farking amazing! It is almost like the support struts perform a different function than the deck. If every bridge that got hit was hit on the support struts it would be a very different story.


Well, there is a bridge locally on I-80 that was struck on load bearing structure by a semi that didn't collapse. They didn't even close the freeway when it happened, just repainted the bridge a while later since a fire left it looking less than optimal. But I will grant you that we have seismic codes to consider that result in different building practices than places that don't have to consider such things.
 
2013-05-25 08:18:57 PM  

derpy: MFAWG: remus: [www.enemyplanet.com image 600x480]

That can't possibly be real.

http://xkcd.com/verizon/


I'm listening to this now.

I want to cut myself to make the hurt go away.

/Please make the hurting stop
 
2013-05-25 08:40:53 PM  
 
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