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Homework Help: Need Help Grade 11 physics question

  1. Nov 2, 2003 #1
    Need Help Grade 11 physics question!!

    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
    1/2mv^2 = mgh
    1/2v^2 = gh
    h=1/2(8)^2/10=3.2 m
     
  4. Nov 2, 2003 #3
    You must know his velocity in the Y direction or up. If you were given and angle, then it can be broken down.

    If he only has a velocity of 8 m/s in the X direction, then he will not leave the ground.

    Nautica
     
  5. Nov 2, 2003 #4
    thanks alot i figured it out i got the same answer as u 3.2 i think i need to find the velocity so do i just double the 3.2 and make it 6.4?
     
  6. Nov 2, 2003 #5

    ShawnD

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    Science Advisor

    meister hit the nail on the head.
    What do you mean find the velocity? When he starts off, his X velocity is 8 and his Y is 0; at the peak of his swing, both x and y are 0.
     
  7. Nov 3, 2003 #6
    I see now, I was reading it as how far up he would jump onto the swing?

    Nautica
     
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