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Projectile Motion

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Projectile Motion
Yr. 12 Physics Assessment Task #1: Part A
Open ended investigation By Rex Whiticker
Projectile Motion
Abstract:
The Project motion of a catapult being fired is varied by a range of factors that affect the path of the projectile. In this experiment, the angle of trajectory, mass of the projectile and change in initial velocity of the launch, were all factors considered in the end result to investigate the properties of projectile motion. The purpose of the experiment was to conduct a first-hand investigation to design and analysis how angle, weight and power affect projectile motion, collecting approximate values and recording results.

Introduction:
Parabolic motion has been studied for a long time dating all the way back to the time in which Galileo was conducting experiments. During the experiment two angles were fired at 320 and 100 at two different power levels and weights.

Galileo was the first person who accurately described projectile motion. Because of the drawings of Niccolo Tartaglia, Galileo realized that a projectile followed a curved path which is called a parabola. The parabola had an exact mathematical shape that was acted upon two forces, vertical and horizontal. His experiments included rolling balls down a highly polished inclined plane (to lower the acceleration) and record similarities. His work showed that horizontal motion experinces no acceleration and vertical motion is affected by gravity (9.8ms-1).
Aim: Compare factors that influence the trajectory in a project motion experiement through altering angle, weight and power.
Hypothesis: The marble analyzing weight, four rubber bands comparing power and 10o angle will reach the greatest distances.

Equipment: * * Elastic bands * Band saw * Power Drill * 1 inch drill bit * 1/2 inch drill bit * Wire coat hanger x 1 * Blutac (optional) * Superglue

Hardwood Catapult: * Small Screws x 16 * Tiny screw x1



Bibliography: * All about Catapults. 2009. All about Catapults. Available at: http://www.catapults.info/. [Accessed 2nd December 2012]. * Catapult Crazy! Everything about Catapults! 2010. Catapult Crazy! Everything about Catapults!. Available at: http://www.stormthecastle.com/catapult/index.htm. [Accessed 2nd December 2012]. * How to build a catapult. 2011. How to build a catapult. Available at: http://www.stormthecastle.com/catapult/how-to-build-a-catapult.htm. [Accessed 2nd December 2012]. * How to Build a Catapult Easy to Build Catapult Plans and Trebuchet Plans. 2011. How to Build a Catapult Easy to Build Catapult Plans and Trebuchet Plans. Available at: http://www.howtobuildcatapults.com/. [Accessed 2nd December 2012]. * Projectile motion - Wikipedia, the free encyclopedia. 2011. Projectile motion - Wikipedia, the free encyclopedia. Available at: http://en.wikipedia.org/wiki/Projectile_motion. [Accessed 12th Decemeber 2012]. * Deformation (engineering) - Wikipedia, the free encyclopedia. 2011. Deformation (engineering) - Wikipedia, the free encyclopedia. Available at: http://en.wikipedia.org/wiki/Deformation_(engineering). [Accessed 5th January 2013].

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