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visera
Dragonstar
Joined: 14 Apr 2008
Posts: 13
Location: center of your mind
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 Posted: Mon 14 Apr 2008 10:33 Post subject: |
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how do you get an elephant in to a subway?
hint: take the "s" from "sub" and the "F" from "way"
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Hyraxylos
Shining Dragonstar
Joined: 13 Jun 2007
Posts: 805
Location: Atlanta, GA
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| Posted: Wed 16 Apr 2008 8:38 Post subject: |
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This was on a physics quiz and those ALWAYS have tons of trick questions.
Evil (somewhat) Question 1: A truck travelled north for 6 hours at 45 mph then east for 5 hours at 40 mph and has just stopped to refuel. What is its current momentum?
Evil Question 2: A train carrying some large containers open in the top is travelling along a frictionless railroad track. A large load of coal inexplicably materializes out of nowhere and gets dumped into one of the containers from above, filling up the container with coal. What happens to the train's speed?
Evil Question 3: You get into a car at Point A and drive to Point B and then back to Point A. They are fifty miles apart and you drive in a straight line back-and-forth and the round trip takes two hours. What is your averaged velocity of that full time period? (Note: everyone in my class missed this question except me.  )
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Icedheart
Dragonstar
Joined: 21 Dec 2006
Posts: 2301
Location: A place called my 'own' paradise
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| Posted: Wed 16 Apr 2008 11:40 Post subject: |
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| Evil Question 2: A train carrying some large containers open in the top is travelling along a frictionless railroad track. A large load of coal inexplicably materializes out of nowhere and gets dumped into one of the containers from above, filling up the container with coal. What happens to the train's speed? |
Nothing, because it is a frictionless railroad track.
((And i'm far too lazy to pick apart the other one's  ))
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Binky
Shining Dragonstar
Joined: 03 Dec 2003
Posts: 228
Location: Wombania, Canada
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| Posted: Sat 19 Apr 2008 18:30 Post subject: |
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1) Momentum is zero (you're stopped).
3) Distance = 50 x 2 =100 miles divided by 2 hrs = 50 MPH
I don't see the trick...
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Raven
Shining Dragonstar
Joined: 11 Jul 2004
Posts: 660
Location: Lost in his mind...
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| Posted: Sat 19 Apr 2008 20:22 Post subject: |
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Distance = 0 because you end where you started. Physics is stupid that way. Leastwise, it is if I'm remembering the velocity formula correctly.
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Binky
Shining Dragonstar
Joined: 03 Dec 2003
Posts: 228
Location: Wombania, Canada
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| Posted: Mon 21 Apr 2008 17:18 Post subject: |
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| Raven wrote: |
| Distance = 0 because you end where you started. Physics is stupid that way. Leastwise, it is if I'm remembering the velocity formula correctly. |
Ah, yes. You are very correct, Raven.
Those tricky physicists!
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DragonMancer
Dragonstar
Joined: 08 Feb 2008
Posts: 1599
Location: Scotland
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| Posted: Thu 01 May 2008 10:04 Post subject: |
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What is the difference between left and right?
You must answer in words no "*holds up left hand* this is left", and, "*holds up right hand* this is right".
Give it a go!!
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Jaspar
Dragonstar
Joined: 20 Mar 2007
Posts: 48
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| Posted: Sat 03 May 2008 7:35 Post subject: |
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Left is the stuff you leave behind when you turn right around a corner in a hurry.
lol, yeah, I made that up...
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