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Velocity and height of an arrow

  1. Nov 12, 2008 #1
    1. The problem statement, all variables and given/known data

    [​IMG][​IMG]

    2. Relevant equations


    k = 898 N/m
    m = 90.7g = .0907kg
    d = 27 inch = .6558m
    g = 9.8 m/s

    3. The attempt at a solution

    [​IMG][​IMG]


    ok This format should work well.

    trying to post these right so i can find some help in them.
     
  2. jcsd
  3. Nov 12, 2008 #2
    would like to see if this looks rite before bed...due tomorrow
     
  4. Nov 13, 2008 #3
    This is great because I was just having trouble calculating velocity tonight and finally figured it out.

    You've got the height right and a short cut I discovered to finding velocity is
    that velocity equals the square root of 2xgxh

    v=[tex]\sqrt{}2gh[/tex] so v=[tex]\sqrt{}2x9.8x217.55[/tex]

    v=65.3m/s
     
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