CO2 dragsters are miniature racing cars which are rocket-powered by a carbon dioxide cartridge, pierced to start the release of the gas, and which race on a typically 65 foot track. They are frequently used to demonstrate mechanical principles such as mass, force, acceleration, or aerodynamics . Two hooks (eyelets or screw eyes) linked to a string (usually monofilament fishing line) the bottom of the car prevent the vehicle from losing control during launch. In a race, a laser scanner records the speed of the car at the end of its run. Often, the dragster is carved out of balsa wood because of its light weight.[1][2]
CO2 cars are a part of engineering curriculae in diverse parts of the world such as Australia, New Zealand[1] and the United States[2]. In the United States, classroom projects and competitions can operate under the aegis of the Technology Student Association at middle school and high school levels.[3][4] Competitions can be featured in local newspapers.[5] Students learn about the forces of gravity, drag, wind resistance, and the motion of air as a fluid. The projects mainly test the aerodynamic, mass and friction properties of a car. These forces can influence performance in a race, so it is vital to take them into account when building
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