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Range formula

  1. Oct 13, 2009 #1
    1. The problem statement, all variables and given/known data
    During a high school track meet, an athlete performing the long jump runs and leaps at an angle of 25 degrees and lands in a sand pit 8.5 m from his launching point. If the launch point and landing point are at the same height, y=0m, with what apeed does the athlete land?



    2. Relevant equations



    3. The attempt at a solution
    How do i use range formula to find initial velocity
     
  2. jcsd
  3. Oct 13, 2009 #2

    lewando

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    Gold Member

    The range formula is kind of specialized to give you range if you know V, θ, and y(0). Since you know range, θ, and y(0) you could isolate v, I suppose. The algebra looks painful too me. I'd rather find v using standard kinematic equations for x-axis motion and y-axis motion--2 equations, 2 unknowns (v and T).
     
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