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Thread: Nobody ever teaches me how physics works

  1. #1
    Your very own Pikachu! Banned Peegee's Avatar
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    Grin Nobody ever teaches me how physics works

    The other day I defined 'wind' to my brother as 'a change in air pressure in large scales', and it got me thinking that either I don't pay attention in school or school did not teach me the most simple things.

    Here an example I can't explain:

    When you have a collision where the momentum are opposing, the collision magnitude is additive.

    For example 20 N·s -> <- 10 N·s = 30 N·s of momentum, assuming there's no loss of energy elsewhere.

    In the example 20 N·s-> 10 N·s -> , the object behind the object in the front strikes the object in the front, but with momentum 10 N·s
    Why does this happen? It's not sufficient to say that it is intuitive, and I was never taught why things happen. I was simply taught to apply trigonometry and algebra and solve for the equation.

    Are there any questions about reality you have questions about? For example the reason I don't fall through the earth is because of electrostatic repulsion, or something like that (this explains why solid things do not pass through each other). WTF

    PS what am I asking? is there a term for it?
    Last edited by Peegee; 11-30-2010 at 04:31 PM.

  2. #2
    Just Do It kotora's Avatar
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    it works because of Jesus
    This twenty-year-old boy was distinguished from childhood by strange qualities, a dreamer and an eccentric. A girl fell in love with him, and he went and sold her to a brothel...

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    Grin

    Quote Originally Posted by kotora View Post
    it works because of Jesus
    A wizard did it

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    tech spirit
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    No, Jesus.
    Or are you saying Jesus is a wizard?
    everything is wrapped in gray
    i'm focusing on your image
    can you hear me in the void?

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    Grin

    Quote Originally Posted by Mirage View Post
    No, Jesus.
    Or are you saying Jesus is a wizard?
    Jesus is God wizard. He casts zapzap at Satan and makes him dead.

  6. #6
    That's me! blackmage_nuke's Avatar
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    I was in the process of composing a serious response until I realised pg made this thread
    Kefka's coming, look intimidating!
    Have a nice day!!

  7. #7
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    Grin

    My question is serious but you guys love to be pgish in a pg thread.

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    absolutely haram Recognized Member Madame Adequate's Avatar
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    And whose fault is that?

    In seriousness, because of what Newton figured out. So, it happens because the universe's physical laws demand it happen. If you mean why are those laws set up like that, that's way above my pay grade, the best we can do is "they just are".

  9. #9
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    Grin

    Quote Originally Posted by I'm my own MILF View Post
    And whose fault is that?

    In seriousness, because of what Newton figured out. So, it happens because the universe's physical laws demand it happen. If you mean why are those laws set up like that, that's way above my pay grade, the best we can do is "they just are".
    Basically you don't know why conservation of energy happens

  10. #10
    cyka blyat escobert's Avatar
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    PG I love you but nomore thinking threads plz thx.

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    Grin

    Quote Originally Posted by Bert View Post
    PG I love you but nomore thinking threads plz thx.
    LOL I'M ASIAN MOG SO ORGINAL LOLOLOLOL AMIBESTPOSTAR YET?

    OMG I SAID ASL LOL WITTY

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    cyka blyat escobert's Avatar
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    I just don't want to think about things like why falls or why luquid stays in and object going in an orbit!

  13. #13

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    chosen reference frame conservation of momentum etc.


  14. #14
    Score: 0 out of 2 Dignified Pauper's Avatar
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    Does it have something to do with inertia? Being that the force of inertia on the object with N -> 20 has more inertia that overpowers the N->10 ? I think you're asking why the opposing force ends up being transferred between the objects. I think it has something to do with inertia.

    Physics fail. ASL?

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    Grin

    Quote Originally Posted by Dignified Pauper View Post
    Does it have something to do with inertia? Being that the force of inertia on the object with N -> 20 has more inertia that overpowers the N->10 ? I think you're asking why the opposing force ends up being transferred between the objects. I think it has something to do with inertia.

    Physics fail. ASL?
    Yes physics fail. I want to know why if I push against an object the force doesn't push back at me, or gets transferred to a power plant in brasil. "because that's how it works" ?

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