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Hi folks

  1. Feb 28, 2015 #1
    Hi everyone !
    I present myself : I come from belgium,I'm librarian.
    I join you because, I need help for a little calculation*.
    It's about physics (newton's law application) , I have searched over the web for a french forum but, it's always good to have different point of view and to practice a little my very bad english**.

    So, I'll post my little question on the good section and I think I will participate in the sci-fi section.

    Regards, Max.

    * If I find the correct section of the forum.

    **Feel free to correct me !
     
  2. jcsd
  3. Feb 28, 2015 #2
    Hmm.. You should reply to this with the question...
     
  4. Feb 28, 2015 #3
    I'll do.

    I'm searching every data.
     
  5. Feb 28, 2015 #4
    I'm just hoping you've figured out your problem. :)
     
  6. Mar 1, 2015 #5
    No but it's really hard to explain myself in english :
    I'll try to keep it simple :
    The other day I was watching a Hollywood movie.
    As we have all seen the bad guys are shot and are projected several meters backward.
    My question is simple : imagining that a bullet can transmit all of its energy in a body what would be the energy, in joules, to push away a man of 80 kg backward ?

    In reality, a bullet only transmit a very little of it's énergy and the shooter will also fly backward but it's only a "movie debunk"
    Thank you !

    (Sorry for my crappy English )
     
  7. Mar 1, 2015 #6
    Okay so how far back would you want your man to be thrown?
     
  8. Mar 1, 2015 #7
    2 meters seems "hollywood standard".
     
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