Kim+Lim

=__**Shelby Mustang Doing A 360˚**__=

Doing a 360˚ is a typical stunt in cars for movies, professional stunt drivers, or just for fun (some people say) but it is dangerous. It involves acceleration of the car to move in a circular position, thrust of the engine, and the friction between the rubber tires and the road. In car terms, //acceleration is a vehicle's capacity to gain speed within a short time.// This Shelby Mustang has a powerful engine (750 horsepower) which causes it to accelerate faster. The acceleration of a car depends on the speed of the cycle and its repetition, the piston moves faster when the driver steps on large amounts of gas into the engine which helps the car accelerate faster. A piston is a disk or short cylinder fitting closely within a tube in which it moves up and down against a liquid or gas, used in an internal combustion engine to derive motion, or in a pump to impart motion. With a jerk of the wheel to one side and then back,setting the car in 1st or 2nd gear and accelerate, the car will begin to slide eventually doing a 360˚.

//Thrust is when a system expels or accelerates mass in one direction the accelerated mass will cause a force of equal magnitude but opposite direction on that system.// In this case, the thrust comes from the engine of the car. The engine of car operates by uses of small controlled explosions to move the pistons of the engine and when the engine runs out of energy from the explosion, another explosion takes place. It forces the piston to move up and down again and goes on until needed to create thrust.

//Friction is caused by rubbing of one object or surface against another.// In this case in the picture above, the Shelby Mustang is causing friction from the tires rubbing against the road as it continues to do a 360˚. The rubber of the tires generates friction in three major ways: //adhesion//, //deformation//, and //tear/wear//. Adhesion is the bonding between the two surfaces as shown in the picture above: rubber tires and the road. Movement of a tire on a rough surface results in the deformation of the rubber by high points on the surface. Rubber produces traction forces which means tearing/wearing. As deformation forces and sliding speeds go up, tearing absorbs energy resulting in additional friction forces in the contact surface.

__**Physics Concepts:**__ @Acceleration, Thrust, @Friction


 * __References:__**

Allison, Wesley. “2010 Shelby GT500 Super Snake Burn Out.” //MotorTrend//. MotorTrend Magazine, Source Interlink Media, 2011. Web. 20 Dec. 2011. [|http://www.motortrend.com/‌multimedia/‌wallpaper/‌112_0912_hennessey_camaro_speedfactory_challenger_shelby_gt500_wallpaper/‌photo_09.html#photo].

Pippin, Matthew. “Piston engine.” //Aamco//. Abufaris/‌AamcoCovinaAndMonrovia, 2011. Web. 20 Dec. 2011. [].

Qureshi, Usman Ishfaq. “How a Car Engine Works.” //Ezine @rticles//. EzineArticles, 2011. Web. 20 Dec. 2011. [].

“Rubber Friction.” //Inside Racing Technology//. Paul Haney, 2004. Web. 20 Dec. 2011. [].

“Thrust.” //Wikipedia//. Wikimedia Foundation, Inc, 1 Dec. 2011. Web. 20 Dec. 2011. [].