# Grade 11 Question Need Help Quick

#### LiquidIce

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

Related Introductory Physics Homework Help News on Phys.org

#### outerrim

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.

#### LiquidIce

um.......whats zf stand for

#### outerrim

What you are looking for. (How high above the bottom of his swing will he go)

You know what the others stand for right?

#### LiquidIce

i just found out that they also gave the mass of tarzan in the question the mass is 60kg

### Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving