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Homework Help: Grade 11 Question Need Help Quick

  1. Nov 2, 2003 #1
    The question is something like this im not sure exactly cuz it was on my test.

    Tarzan is running at 8.0 m/s and jumps onto a vine. How high above the bottom of his swing will he go ?

    Plz help i have no clue how to do this
     
  2. jcsd
  3. Nov 2, 2003 #2
    Put what you have into a COE equation.
    0= .5mvf^2 - .5 mvi^2 + mgzf - mgzi

    vf=0 at top of swing
    zi=0 in my reference frame

    so 0= -.5 mvi^2 + mgzf

    and solve for zf.
     
  4. Nov 2, 2003 #3
    um.......whats zf stand for
     
  5. Nov 2, 2003 #4
    What you are looking for. (How high above the bottom of his swing will he go)

    You know what the others stand for right?
     
  6. Nov 2, 2003 #5
    i just found out that they also gave the mass of tarzan in the question the mass is 60kg
     
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