Posted by **Julia** on Tuesday, August 31, 2010 at 6:20am.

What equation should I used for a water bottle rocket lab?

I am using distance vs volume of water. Of course, the volume of water is my independent variable. What equation should I use for this lab?

- physics -
**MathMate**, Tuesday, August 31, 2010 at 9:09am
According to a Wiki article, the formula for the instantaneous thrust is

F=2PA_{t}

where

F=thrust

P=pressure

A_{t}=area of the nozzle

Obviously the mass changes with time as well as the pressure. So both F, mass and P are functions of time, and you will need to integrate the resulting acceleration over time to get the distance.

Do read through the safety precautions before attempting this lab.

Ref:

http://en.wikipedia.org/wiki/Water_rocket

## Answer This Question

## Related Questions

- physics - A rectangular crate of weight W is floating in water with 2/3 of its ...
- AP Chemistry - I am doing a lab on finding the molecular mass of a volatile ...
- chem - The "proof" of an alcoholic beverage is twice the volume percent of ...
- algebra - ------Suppose someone opens the valve on a large water tank so that ...
- Algebra 2 - A bottling company is filling 32 oz bottles of water. A bottle is ...
- Algebra - Suppose someone opens the valve on a large water tank so that water ...
- chemistry - The reaction between 0.045 g of calcium with an excess of water was ...
- chemistry lab - A volume of water delivered using a buret has a mass of 2.67 g. ...
- physics - I'm having a hard time answering this question. I don't know what ...
- Grade 12 chemistry - This is the second reaction: HCl(aq)+NaOH(aq)-->NaCl(aq...

More Related Questions