Any Physics genius' on this board?

Discussion in 'Off-Topic' started by cyismydog, Sep 23, 2009.

  1. cyismydog

    cyismydog Well-Known Member

    Apr 13, 2006
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    I need help with a problem for my AP online class, my teacher is a bigger idiot than Pacman Jones, and can't teach to save her life:
    Any help would be appreciated. You don't necessarily have to do it for me, but just show me which equations to use, and which variables mean what.
    Thanks in advance, I really appreciate it.
     
  2. tim_redd

    tim_redd Well-Known Member

    Mar 29, 2006
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    Ankeny
    What planet is this cannon fired from?
     
  3. cyismydog

    cyismydog Well-Known Member

    Apr 13, 2006
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    Earth.
     
  4. 3TrueFans

    3TrueFans Well-Known Member

    Sep 10, 2009
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    European or African Cannonball?
     
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  5. CycoCyclone

    CycoCyclone Well-Known Member

    Apr 6, 2009
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    Are we taking gravity into account?
     
  6. IcSyU

    IcSyU Well-Known Member

    Nov 27, 2007
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    How hard is the ground? :wink: If it's hard enough, it's gonna be 0. :biggrin:
     
  7. sodakjoe

    sodakjoe Well-Known Member

    Sep 15, 2006
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    Ames via Sioux Falls, SD
    Equation for constant acceleration

    at^2 + v0t + s = 0, where:

    a = acceleration
    v0 = initial velocity of the object
    s = initial position of the object
     
  8. Stewo

    Stewo Well-Known Member

    Oct 29, 2008
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    You know I don't speak Spanish, CIMD.
     
  9. sodakjoe

    sodakjoe Well-Known Member

    Sep 15, 2006
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    Split your velocity into two components: an x component and a y component, and try to work it from there.
     
  10. keepngoal

    keepngoal Jobless Jerk
    Staff Member Bookie

    Jun 20, 2006
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    Has resistance been taken out of the problem?
     
  11. cyismydog

    cyismydog Well-Known Member

    Apr 13, 2006
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    Yes.
     
  12. pyrocyz

    pyrocyz Well-Known Member

    Jun 2, 2006
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    Things that need to be taken into account include terminal velocity (you would need the mass of the cannon ball), gravity in general (the cannon ball may be traveling almost straight down by the time it gets to the ground)

    Personally I would look into projectile motion equations. All projectiles proceed on a curve, you are just starting 60% of the way through the curve.
     
  13. DaddyMac

    DaddyMac Well-Known Member

    Oct 18, 2006
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    #13 DaddyMac, Sep 23, 2009
    Last edited: Sep 23, 2009
    Clearly a French cannonball.


    Next question is how did it get to England?
     
  14. pyrocyz

    pyrocyz Well-Known Member

    Jun 2, 2006
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    I'd listen to sodakjoe...he knows his stuff
     
  15. cyfanatic

    cyfanatic Well-Known Member

    Oct 18, 2006
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    I have nothing to offer this thread in terms of an answer...but what does it say about me that I am curious to see what the answer is? I keep hitting refresh to see if someone has offered an answer...
     
  16. cyismydog

    cyismydog Well-Known Member

    Apr 13, 2006
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    That's what I'm trying to do, use the projectile motion equation, but once i plugged all the numbers in, the computer said the answer was wrong, but you get three shots at each problem.
     
  17. jdoggivjc

    jdoggivjc Well-Known Member

    Sep 27, 2006
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    He's no physics expert - he stayed at a Holiday Inn Express last night...
     
  18. sodakjoe

    sodakjoe Well-Known Member

    Sep 15, 2006
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    Haha. I did not stay at a HIE last night, and I am far from an "expert".
     
  19. 3TrueFans

    3TrueFans Well-Known Member

    Sep 10, 2009
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    Just look at his avatar. Is that not a face you would trust with your physics questions?
     
  20. tim_redd

    tim_redd Well-Known Member

    Mar 29, 2006
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    He's smart to wear a helmet to protect his brain from zombies.
     

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