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Need Help Grade 11 physics question

  • Thread starter LiquidIce
  • Start date
  • #1
LiquidIce
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
 

Answers and Replies

  • #2
56
0
1/2mv^2 = mgh
1/2v^2 = gh
h=1/2(8)^2/10=3.2 m
 
  • #3
nautica
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
 
  • #4
LiquidIce
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?
 
  • #5
ShawnD
Science Advisor
668
1
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.
 
  • #6
nautica
I see now, I was reading it as how far up he would jump onto the swing?

Nautica
 

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