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Speed of an arrow when given force, weight, distance

  1. Nov 4, 2012 #1
    1. The problem statement, all variables and given/known data

    EmIga.png

    2. Relevant equations

    Wnet = ΔKE
    F = ma

    3. The attempt at a solution

    I don't know how to break this information down into finding a velocity using these equations
     
  2. jcsd
  3. Nov 4, 2012 #2
    the string is doing work on the arrow. Your first equation is all you need for this problem.
     
  4. Nov 4, 2012 #3

    Simon Bridge

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    You'd need both those equations and a kinematic equation - but what you really want would be the relationship between work and force and distance.
     
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