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Homework Help: Fishing line strenght

  1. Sep 27, 2011 #1
    1. The problem statement, all variables and given/known data
    The tension at which a fishing line snaps is commonly called the line's “strength.” What minimum strength is needed for a line that is to stop a salmon of weight 78 N in 13 cm if the fish is initially drifting horizontally at 3.1 m/s? Assume a constant deceleration.


    2. Relevant equations
    I need to use constant acceleration equations...so: v=V0+at, x-x0=v0t+(1/2)at^2...there are 3 other equations for constant acceleration but I don't think i have learned them yet.

    3. The attempt at a solution
    I am pretty stuck on this one as I have no idea which equation to use and what to do after that to find the solution
     
  2. jcsd
  3. Sep 27, 2011 #2
    I got it with the help of a friend using Vf^2=V0^2+2a(x-x0) and F=ma
     
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