top-rated free essay

# Bottle Rockets

Oct 08, 1999 454 Words
A rocket in its simplest form is a chamber enclosing a gas under pressure. A small opening at one end of the chamber allows the gas to escape, and in doing so provides a thrust that propels the rocket in the opposite direction. Newton's laws can be used to explain this his laws in the simplest terms can be explained like this: First law- Objects at rest will stay at rest and objects in motion will stay in motion in a straight line unless acted upon by an unbalanced force. Second law- Force is equal to mass times acceleration.

Third law- For every action there is always an opposite and equal reaction. For the rocket to launch it needed to be propelled by something, for our rockets we used regular air and compressed it. Upon releasing the stopper Newton's first law went into effect which states that for something to move a force must act upon it in this case the gas moving out of the bottle. When the stopper was pulled the pressure in the bottle forced its way down, which applied the force to start the motion of the bottle. His 3rd law can also explain this because the water going down forces the rocket in the exact opposite direction the water goes. Which is why one time when we shot the rocket it flew at an angle. Also it shows why the launchers had stoppers, because if they didn't the cork wasn't strong enough to hold that pressure and would cause the rocket to begin flight prematurely. His second law can be used to describe how high and fast the rocket will go. If you wanted it to go really high and fast you would just pump more pressure into it then if you didn't want it to go that high. You can determine how much force is needed by multiplying the mass by the acceleration. Our rocket was fairly decent the only problems were that the wings were not completely stable. Our egg survived in the capsule we built and one other egg even survived with out being in a capsule at all. To make our flight time higher we should of pumped more air into to increase the force which would cause it to go higher. Overall though our rocket had decent air time because of the amount we pumped it up. All three of Newton's laws were easily explained using this small experiment we did. From the pressure cause motion in a non-moving object, to being able to determine the acceleration applied to the rocket by finding mass and force, also showing how things react in equal but opposite directions.

## Related Documents

• ###### Bottle Rocket

...﻿ Manufacturing A Steps involved to building a Bottle Rocket: Materials Two 2 litter soda bottles. Cardboard pieces pre cut and measured Duct tape Scissors, Cutters, Cutting Board, Glue etc  Foam pieces for fins Vinyl Material according to colors Cotton or any Sponge type material used for the Egg Compartment Construction To build a bottle...

• ###### Rocket ISU

...﻿Rocket ISU Lab Report Abstract What are rockets? How did they come to our existence? What are the main principles behind rockets? What is the history of rockets? How is the mass of the rocket related to its Fnet, Acceleration, Max Height, etc. This lab report gives a brief explanation of the physics behind this innovative man-made invent...

• ###### Water Rockets: An Investigational Experiment

...Water Rockets Abstract Water rockets have been a source of entertainment and education for many years. They are usually made with an empty 2-litre PET bottle by adding water and pressurizing it with air for launching. Water rockets are used to help students understand the principle of aeronautics. Aim The aim was to design and perform an ex...

• ###### An Extended Investigation: Bottle Rockets

...| Liam Hallam Cameron Martin | Bottle Rockets | Table of Contents This extended investigation serves to examine and evaluate the physical forces that affect the flight of a bottle rocket. This will be accomplished by altering the water levels and the level of air pressure (psi) within the rocket will be altered, and tested, to further ...

• ###### Water Bottle Rockets

... Introduction A water bottle rocket is essentially that; a bottle modified in the image of a rocket then filled with a select amount of water that is pressurised and launched into the air due to the forces pushing the rocket upwards from the launcher. When the completed water bottle rocket is sitting on the launcher, the force of ...

• ###### Rocket and Evolution

...History of Rockets Our time there has been an evolution in our history of rockets. It has been one man-kinds greatest invention for thousands of years. Rockets date back to 400 B.C in the city Tarentum from a roman writer named Aulus Gellius as he tells a story of a Greek, named Archytas. Archytas used his invention to amuse and baffle the peo...

• ###### Bottle Rockets

...The effect of a Bottle Rockets dimensions on the rockets hang time Respectfully Submitted to the Science Department of Blanche Ely High School Bryan Berrios Andre Edwards Rashean Senior Abstract Bottle rockets, people see them as middle school science projects where kids have fun and build little rockets. Actually there is a lot beh...

• ###### Water Rocket

...[pic] [pic] [pic] [pic] Name: XX Class: 4Sc1 Teacher: Pn XX Group Name: XX INTRODUCTION A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel—the engine of the rocket—is usually a used plastic soft drink bottle. The water is forced out by a pre...