tag:blogger.com,1999:blog-42932949993614315792024-03-05T11:10:39.774-08:00SST 2013 S2-05B ISS BlogUnknownnoreply@blogger.comBlogger8125tag:blogger.com,1999:blog-4293294999361431579.post-218319537407725152013-07-08T01:37:00.000-07:002013-08-13T17:32:58.197-07:00Literature Review (Jason)<span style="font-family: Arial, Helvetica, sans-serif;">Our topic question is "How the angle of the Catapult affects the distance and height of the projectile"</span><br />
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<span style="font-family: Arial, Helvetica, sans-serif;">After seeing several other similiar kinds of topics on the internet, the topic seemed relatively easy and fun for our team.</span><br />
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<u><span style="font-family: Arial, Helvetica, sans-serif;">Modern Usage of Catapults</span></u><br />
<span style="font-family: Arial, Helvetica, sans-serif;">Aircraft Catapults: Used to launch planes when the runway is too short</span><br />
<span style="font-family: Arial, Helvetica, sans-serif;">Clay Shooting: Small catapults<i>,</i> used to launch clay targets</span><br />
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<span style="font-family: Arial, Helvetica, sans-serif;">The basics of our Catapult would most likely be rubber band powered as using weights would be harder on a small model. It would be made of wood and plastic with a ping pong ball as the projectile.</span><br />
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<u><span style="font-family: Arial, Helvetica, sans-serif;">Basic Concept of how the angle works</span></u><br />
<span style="font-family: Arial, Helvetica, sans-serif;">Normally the angle would be 45 Degrees as it gives you equal balance between both Distance and Height of the projectile, though when the angle is lower than 45, the distance might be further though you suffer in height, while if the angle is higher than 45, you would gain more height but lesser distance.</span><br />
<br />Jason Lowhttp://www.blogger.com/profile/03959733222804100435noreply@blogger.com0tag:blogger.com,1999:blog-4293294999361431579.post-55208613318472563022013-07-07T23:44:00.003-07:002013-08-13T17:33:11.276-07:00Literature Review (Luke)<div dir="ltr" style="text-align: left;" trbidi="on">
<span style="font-family: Arial, Helvetica, sans-serif;">Modern Uses of Catapults:</span><br />
<span style="font-family: Arial, Helvetica, sans-serif;">1. Aircraft Catapults - Used to launch planes when the runway is too short.</span><br />
<span style="font-family: Arial, Helvetica, sans-serif;">2. Ships use them to deploy bombs or torpedoes against submarines</span><br />
<span style="font-family: Arial, Helvetica, sans-serif;">3. Clay Pigeon Shooting - Small catapults, known as <i>traps</i>, are used to launch clay targets.</span><br />
<span style="font-family: Arial, Helvetica, sans-serif;">4. Pumpkin Chunking - People see who can launch a pumpkin the farthest by mechanical means.</span><br />
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<span style="font-family: Arial, Helvetica, sans-serif;">Launch Angle Determining the Projectile Range:</span><br />
<span style="font-family: Arial, Helvetica, sans-serif;">When a projectile is shot closer straight up, more energy is needed because the projectile is going closer against the gravitational force.</span><br />
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<span style="font-family: Arial, Helvetica, sans-serif;">"<span style="background-color: white; color: #333333; line-height: 16px;">Do you need specific numbers or a general description?</span><span style="background-color: white; color: #333333; line-height: 16px;"> </span></span><br />
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<span style="font-family: Arial, Helvetica, sans-serif;">If a general description will do:</span><br />
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<span style="font-family: Arial, Helvetica, sans-serif;">At a <span class="yshortcuts cs4-visible" id="lw_1373265812416_1" style="border-bottom-color: rgb(54, 99, 136); border-bottom-style: dotted; border-bottom-width: 2px; color: #366388; cursor: pointer;">launch angle</span> of 90 degrees, the range will be zero since the <span class="yshortcuts cs4-visible" id="lw_1373265812416_2" style="border-bottom-color: rgb(54, 99, 136); border-bottom-style: dotted; border-bottom-width: 2px; color: #366388; cursor: pointer;">projectile</span> will travel straight up and back down.</span><br />
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<span style="font-family: Arial, Helvetica, sans-serif;">As the launch angle is reduced, the height of the trajectory will be reduced and the range will increase as more energy drives the projectile downrange and less drives it skyward. (<span class="yshortcuts cs4-visible" id="lw_1373265812416_3" style="border-bottom-color: rgb(54, 99, 136); border-bottom-style: dotted; border-bottom-width: 2px; color: #366388; cursor: pointer;">Trajectories</span> from firing angles greater than 45 degrees are characterized by large max height and shorter range.)</span><br />
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<span style="font-family: Arial, Helvetica, sans-serif;">At a 45 degree angle, range is maximized.</span><br />
<span style="font-family: Arial, Helvetica, sans-serif;"><br /></span>
<span style="font-family: Arial, Helvetica, sans-serif;">Once past 45 degrees, the range starts to fall again as the trajectory's reduced height reduces the flight time of the projectile.</span><br />
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<span style="font-family: Arial, Helvetica, sans-serif;">At a launch angle of 0 degrees, the range will be limited by the height of the launcher over the surrounding ground. The projectile will quickly lose any altitude it has, limiting the range significantly.<span style="color: #666666;">" - </span><a href="http://answers.yahoo.com/question/index?qid=20080928202017AAJFyrY" style="background-color: transparent;">http://answers.yahoo.com/question/index?qid=20080928202017AAJFyrY</a></span></div>
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Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-4293294999361431579.post-43573691936652869912013-07-05T18:06:00.000-07:002013-08-13T17:32:48.383-07:00Literature Review (Clemens)<div style="text-align: left;">
<span style="font-family: Arial, Helvetica, sans-serif;">Based on a design i noticed on the internet,</span></div>
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<span style="font-family: Arial, Helvetica, sans-serif;">Materials needed:</span><br />
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<span style="font-family: Arial, Helvetica, sans-serif;">-About 7 to 8 half-inch cylindrical rods made out of wood.</span></div>
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<span style="font-family: Arial, Helvetica, sans-serif;">-2 12 inch cylindrical rods</span></div>
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<span style="font-family: Arial, Helvetica, sans-serif;">-Zip ties</span></div>
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<span style="font-family: Arial, Helvetica, sans-serif;">-Screws</span></div>
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<span style="font-family: Arial, Helvetica, sans-serif;">-Ping Pong Ball</span></div>
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<span style="font-family: Arial, Helvetica, sans-serif;">-Optional-</span></div>
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<span style="font-family: Arial, Helvetica, sans-serif;">A cup that a ping pong ball can fit in.</span></div>
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<span style="font-family: Arial, Helvetica, sans-serif;">Tools that are needed (Tools are dangerous and severe injuries might occur when used wrongly.)</span></div>
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<span style="font-family: Arial, Helvetica, sans-serif;">-Staple Gun</span></div>
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<span style="font-family: Arial, Helvetica, sans-serif;">-Screwdriver</span></div>
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<span style="font-family: Arial, Helvetica, sans-serif;">-Drill</span><br />
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<u><span style="font-family: Arial, Helvetica, sans-serif;">The modern use of catapults</span></u><br />
<span style="font-family: Arial, Helvetica, sans-serif;">It is possible to use a catapult to launch an airplane into the air, and in some cases catapults are used to throw clay pigeons into the air for target practice.</span></div>
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<span style="font-family: Arial, Helvetica, sans-serif;">Source:</span></div>
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<span style="font-family: Arial, Helvetica, sans-serif;">Poza (2011, March 29). Ping Pong Ball Catapult. <i>Ping Pong Catapult</i>. Retrieved July 5, 2013, from <a href="http://www.instructables.com/id/Ping-Pong-Ball-Catapult/?ALLSTEPS">http://www.instructables.com/id/Ping-Pong-Ball-Catapult/?ALLSTEPS</a></span><br />
<span style="font-family: Arial, Helvetica, sans-serif;">Unknown. Modern Day Catapults. <i>Physics of Catapults. </i>Retrieved July 5,2013, from <a href="https://sites.google.com/site/physicsofcatapults/home/modern-day-catapults">https://sites.google.com/site/physicsofcatapults/home/modern-day-catapults</a></span></div>
Clemens chuahttp://www.blogger.com/profile/01784497819147889423noreply@blogger.com0tag:blogger.com,1999:blog-4293294999361431579.post-19669088841207593122013-07-04T20:07:00.000-07:002013-09-04T05:48:40.477-07:00Literature Review (Thurga)<span style="font-family: Arial, Helvetica, sans-serif; line-height: 23px;">How is catapult used in modern days?</span><br />
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<span style="background-color: white;">Catapults are well-known to most people, maintaining their fame mostly through movies, history books and video games.</span><span style="border: 0px; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"><br />Due to advance technology, </span><span style="background-color: white; line-height: 21px; text-align: justify;">their uses are relatively more benign today.</span></span><br />
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Slingshots</span></h2>
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<span style="font-family: Arial, Helvetica, sans-serif;">A toy for most kids, Slingshots usually use a stretchable plastic material, which connects to two crossbars. The user places a projectile within the center of the stretchy piece, stretches it, aims and fires.</span></div>
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Aircraft Carriers</span></h2>
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<span style="font-family: Arial, Helvetica, sans-serif;">Navy aircraft carriers use these. Each aircraft carrier contains four different catapults that are used to get planes up to high speeds to allow them to take off with extremely short runways. The catapult consists of two cylinders that contain pistons.</span><br />
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Clay Shooting</span></h2>
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<span style="font-family: Arial, Helvetica, sans-serif;">Clay-shooting offers many advantages. It allows hunters to shoot at a target without actually shooting anything that's alive, it provides an opportunity to practice at a rapid pace and it also allows a moving target.</span></div>
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<span style="border: 0px; font-family: Arial, Helvetica, sans-serif; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;"><br />Reference:</span><br />
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<span style="font-family: Arial, Helvetica, sans-serif;"><span style="background-color: white; line-height: 14px;">Johnson, S. (n.d.). Modern Uses of a Catapult | eHow. </span><i style="background-color: white; line-height: 14px;">eHow | How to Videos, Articles & More - Discover the expert in you.</i><span style="background-color: white; line-height: 14px;">. Retrieved July 10, 2013, from http://www.ehow.com/info_8597229_modern-uses-catapult.html</span></span><br />
<span style="font-family: Arial, Helvetica, sans-serif;"><span style="background-color: white; line-height: 14px;"><br /></span>
<span style="background-color: white; line-height: 14px;">Federation of American Scientists :: Aircraft Carriers. (n.d.). </span><i style="background-color: white; line-height: 14px;">Federation of American Scientists</i><span style="background-color: white; line-height: 14px;">. Retrieved July 10, 2013, from http://www.fas.org/programs/ssp/man/usw</span></span><br />
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<span style="background-color: white; line-height: 14px;">All about Catapults . (n.d.). </span><i style="background-color: white; line-height: 14px;">All about Catapults </i><span style="background-color: white; line-height: 14px;">. Retrieved July 10, 2013, from http://www.catapults.info/</span></span></div>
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Anonymousnoreply@blogger.com0tag:blogger.com,1999:blog-4293294999361431579.post-74108970168606088122013-07-04T19:44:00.002-07:002013-08-13T17:32:17.947-07:00Hypothesis<span style="font-family: inherit;">Topic chosen: <span style="background-color: white; color: #333333; line-height: 19px;"><span style="font-family: inherit;">To develop and investigate if the amount of weights affects the distance traveled by a ping pong ball from the catapult.</span></span></span><br />
<span style="font-family: inherit;"><span style="background-color: white; color: #333333; line-height: 19px;"><span style="font-family: inherit;"><br /></span></span></span>
<span style="font-family: inherit;"><span style="background-color: white; color: #333333; line-height: 19px;"><span style="font-family: inherit;">Hypothesis: The more amount of weights added, the further the ping pong ball will travel.</span></span></span>Clemens chuahttp://www.blogger.com/profile/01784497819147889423noreply@blogger.com0tag:blogger.com,1999:blog-4293294999361431579.post-9484390856812317422013-07-03T20:06:00.001-07:002013-07-04T19:50:42.431-07:00Lesson 3<div dir="ltr" style="text-align: left;" trbidi="on">
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Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-4293294999361431579.post-88122241829839652352013-07-02T17:30:00.000-07:002013-08-13T17:31:20.759-07:00Lesson 2<div class="separator" style="clear: both;">
2. Possible Projects</div>
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<a href="http://www.sciencebuddies.org/science-fair-projects/project_ideas/ApMech_p008.shtml">-Ping Pong Catapult</a></div>
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<a href="http://www.sciencebuddies.org/science-fair-projects/project_ideas/CE_p024.shtml">-Bridge Design</a></div>
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<a href="http://www.sciencebuddies.org/science-fair-projects/project_ideas/Photo_p004.shtml">-Infrared Photography</a></div>
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Clemens chuahttp://www.blogger.com/profile/01784497819147889423noreply@blogger.com0tag:blogger.com,1999:blog-4293294999361431579.post-47805827708186689232013-07-01T19:31:00.001-07:002013-08-13T17:31:27.278-07:00Lesson 11. What is the scientific method?<br />
Its is a body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.<br />
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Formulation of a question<br />
hypothesis<br />
Prediction<br />
Testing<br />
Analysis<br />
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