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Title
The Ping-pong catapult

Problem Scenario
I will get all the materials i need then i will build it well.

Broad Question
How far can a catapult shoot a golf ball, a hacky-sack, and a ping-pong ball.

Specific Question
What can a Catapult shoot farther a gulf ball, hacky-sack, ping-pong ball.

Hypothesis
a catapult can shoot a golf ball farther

Independent Variable:
The balls

Dependent Variable:
the distance the balls fly

Variables That Need To Be Controlled:
The force of the catapults shot

General Plan
I am going to buy my materials, make shore i have all my stuff before i start, make shore i have a safe place to put my catapult, put the catapult together, test shoot it a couple times, put it in a safe place till the science fair, bring it in the day of the science fair, show everyone how great it is, get a passing grade on the science fair.

Safety Or Environmental Concerns
=Materials list= =A catapult= A golf ball A hacky-sack A ping pong ball measuring tape

Experimental Design
1. I will do my experiment at my house because I have all my materials at my house and I have an open space. I will have no subjects in my experiment because it is a one person experiment. In my experiment I will need three trials to complete my experiment. I will use a spread sheet strait from the computer to complete my experiment. I will document my progress on the computer on Excel and word to keep up with my progress.

Materials List 2. Hacky-sacks 3. Gulf Balls 4. Wood 5. Rubber Band 6. Ping-pong ball 7. Sharpies 8. Nails 9. cardboard
 * 1) Pencils

** Procedure **
 * 1) Get my materials.
 * 2) Put the catapult together.
 * 3) Practices launch the catapult a few times.
 * 4) Launch the catapult three times with a Hacky- sack, gulf ball and a ping- pong ball.
 * 5) Record the data I get.
 * 6) Spray paint the catapult the color I want it.
 * 7) Launch it a few more times to see if it still works good.
 * 8) Record data I get from catapult.
 * 9) Compare the data I get from catapult.
 * 10) Make the poster board.
 * 11) Color the poster board.
 * 12) Put catapult in my room till science fair.
 * 13) Bring them to school on day of science fair.
 * 14) Do well in the science fair.
 * 15) Get a A+ for my catapult/poster board.

(add the correct headings from the experimental design page before beginning)

[[image:A_mini_Catapult.jpg]]


=Data Table=
 * How far can a catapult shoot a gulf ball,hacky sack,ping pong ball ||  ||   ||   ||   ||   ||   ||
 * Ball || Trial 1 || Trial 2 || Trial 3 ||  ||   ||   ||
 * Hacky Sack || 9 inch || 8 inch || 9 inch ||  ||   ||   ||
 * Ping Pong Ball || 7 inch || 8 inch || 7 inch ||  ||   ||   ||
 * Gulf Ball || 7 inch || 6 inch || 6 inch ||  ||   ||   ||
 * || Balls ||  ||   ||   ||   ||   ||
 * Gulf Ball || 7 inch || 6 inch || 6 inch ||  ||   ||   ||
 * || Balls ||  ||   ||   ||   ||   ||
 * || Balls ||  ||   ||   ||   ||   ||
 * || Balls ||  ||   ||   ||   ||   ||

Time Line

 * Background Research **


 * **1. Source:** Burnett, Betty. //The laws of motion.// Copyright. New York, 10010: Rosen Publishing group, 2005. Print. ||  ||
 * **1. Information: tells you the force and motion. It describes motion and how it works and it is a good source of information for anything that involves motion.** ||  ||
 * **2. Source:** www.catapults.info.com ||  ||
 * **2. Information: Tells you all about catapults. And how they were built in the 1800s to throw people a long distance as banishment from that tribe. And how to make a mini Catapult on your own.** ||  ||
 * **3. Source:** www.stormthecastle.com/catapult/index.com ||  ||
 * **3. Information: It tells you how to make a catapult that will make objects fly far. And anything you need to know about catapults for your project.** ||  ||
 * **4. Source:** Parker, Lewis. //Force and motion//. USA, Avenue, mason city: perfection learning, 2006. Print. ||  ||
 * **4. Information: Tells you all the laws of motion and if you are making a catapult it is helpful because of The motion it teaches you everything and it will help with your catapult project it tells you how great the motion is and if you have enough motion to make the object you chose to fly far.** ||  ||

Detailed Procedure
First I'm going to get all the materials i need for my catapult.Then I'm going to make the catapult very well so it will shoot the balls i need it to shoot a far distance. Then i will shoot it to make shore the catapult actually works well. i will do my data well. finally i will keep it in a safe place till the day of the science fair and get a good grade on it.