Ha Ha Ha here's the info anyways :

                                                            Who uses catapults?

 Almost all ancient civilizations used catapults. The Romans, Franks and more others used catapults for war. The Britons used Trebuchets. The Greeks didn’t use catapults much. Almost no one uses catapults now. How is a catapult useful? Civilizations use catapults to destroy enemy castles.  Not many civilizations launched people into the castles. Another reason that in olden days they used catapults was that it was easier to launch the objects strong with very good accuracy. An example of the objects they use would be rocks.

                                                                                                               Kinds of catapults

First, there are many kinds of catapults, large and small. A normal catapult is a catapult without wheels (a catapult with wheels is an onager). Most catapults use thick cords to make tension to spring the rock. The Roman’s onagers and catapults are larger than the other normal catapults and onagers. An onager is a catapult with wheels, which use two thick cords to make tension one against the other. There are kinds of catapults called trebuchets, which are three times larger than normal catapults. A trebuchet uses a bigger rock to counter the weight of the rock launched. The Britons use trebuchets.

                                                                                                                     Project Info

Project title: Will the mass of the object thrown by a catapult effect it's distance?

Team number: 116

Team size: 1-2 ( 2 )

Project abstract: A catapult launching objects and watching which one will go farther... and what size that object is.

Grade category: 4 - 6

Subject: Engineering

Project type: Experimental

Language: English

Software used: Microsoft FrontPage, Internet explorer (www.google.ca and www.flamingtext.com)

Hardware used: Camera, Computer, Memory stick, Scanner.

Special skills used: Computer skills, Brain.

Awards won: None (Yet!)

Source of idea: Christopher Taylor