Harry Potter and the Prisoner of Azkaban-A Window To The Past
Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.
-
Upload
desiree-monckton -
Category
Documents
-
view
226 -
download
0
Transcript of Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.
![Page 1: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/1.jpg)
Harry Potter and the Prisoner of Askaban: The Knight Bus
By: Amanda Speed pd.3
By: Amanda Speed
![Page 2: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/2.jpg)
Scene Description
● Harry Potter decides to take a ride on the magical Knight Bus. This bus defies gravity many times during the scene.
– The braking force of this speed is too great
– The stopping distance of the bus going this velocity would require a much longer stopping distance
– The time is still wrong in order to stop within this distance
– The force to stop in the movie does not match up with the actual force it would take the bus to stop
– Harry should fly through the windshield after stopping that instantly
![Page 4: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/4.jpg)
Physics Concepts
Stopping distance of bus
● Determine velocity of bus using a distance interval and the travel time of that interval
● Determine the bus' momentum with momentum formula
● Impulse momentum theorem to determine the braking force needed to stop the bus
● Braking force to stop bus in the time it stops in movie
● Find actual stopping distance for time in movie
![Page 5: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/5.jpg)
●More Physics Concepts
Force to stop a bus going this speed
● Determine force of friction
● Determine net force (ma)
Prove windshield would break
● Impulse momentum to determine force at which Harry would be traveling
● Compare to force it takes to break a windshield
![Page 6: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/6.jpg)
Estimations
● 1 city block~ 100,000 sq.ft.
● 1.93s to travel 1 block
● 20,360kg estimate for triple decker bus
● Average male mass: 70kg
● About 10 passengers on bus (70kg each)
● 100kg for fuel tank
● 5m estimated distance bus takes to stop
● 1.5s estimate stop time of buss in scene
● .055s estimate time face hits glass for
![Page 7: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/7.jpg)
Calculations
Timing the bus as it travels
● 1 city block~ 100,000sq ft
● = 223.62ft
● = 74.54m
● Velocity=
● V=
● V= 38.6218
![Page 8: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/8.jpg)
Determining the mass of the bus● 1 double decker bus~ 14,560kg +● 1000kg extra floor +● 70kg per person x 10 people +● 100kg fuel tank and fuel = 20,360kg estimate mass of triple decker
bus
![Page 9: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/9.jpg)
Braking force of the bus in the sceneImpulse Momentum Theorem:
![Page 10: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/10.jpg)
Stopping distance the bus needs in the scene to avoid collision with the woman● Kinematic equation:● ● ●
![Page 11: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/11.jpg)
Time the bus should take to stop if it does only have about 5m like the scene
Time the bus would take to stop within the 5m
![Page 12: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/12.jpg)
Determining the force needed to stop the bus in the sceneCoefficient of friction: Fnet=Fapp-Fk= µFn
• Fnet=ma (acceleration= ) Fnet=20,360() Fnet=1,572,679.696N
• Rubber on wet concrete: µs=0, µk=.5 Fk=µkFn (Fn=mg) Fk=.5(20,360×9.81) Fk=99,865.8N
• Fnet=Fapp-Fk
1,572,679.696=Fapp-99,865.8 Fapp=1,672,545.496N ~1,6722.5455kN to stop the bus
![Page 13: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/13.jpg)
Harry would crash through the windshield during brake of the bus
Momentum: F∆t=mvf-mvi
-Convert into lbs /10 ×2.2= 10,814.104lbs
120-200N/mm2 =Force needed to break a windshield
![Page 14: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/14.jpg)
● The braking force of this speed is too great for the bus
● The stopping distance of the bus going this velocity would require a much longer stopping distance
– ~5m in movie, but it would need 28.97m● The time is still wrong in order to stop within this distance
● Only a quarter of a second of time can pass to have a 5m stopping distance
● The force to stop in the movie does not match up with the actual force it would take the bus to stop
– ~524kN to stop in the movie, it should take ~1,000kN to stop in real life● Harry should fly through the windshield after stopping that instantly
– 49,155.0181N of force greatly exceeds the 120-200N Force needed to break a windshield
![Page 15: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/15.jpg)
Works Cited
● "AEC Regent III RT." Wikipedia. Wikimedia Foundation, 25 Mar. 2012. Web. 04 Apr. 2012. <http://en.wikipedia.org/wiki/AEC_Regent_III_RT>
● "City Blocks Differ in Size." Click Here to Support Our Advertiser. Web. 20 Apr. 2012. <http://www.land4ever.com/block.htm>.
● "Knight Bus." Knight Bus- Hary Potter Wiki. Wikja Entertainment. Web. 4 Apr. 2012. <http://harrypotter.wikia.com/wiki/Knight_Bus>.
![Page 16: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/16.jpg)
Works Cited
● "London Bus Museum." 1952 AEC Regent III Bus â ��RT3491 -. The London Bus Preservation Trust Ltd. Web. 04 Apr. 2012. <http://www.londonbusmuseum.com/museum-exhibits/double-deck-buses/aec-regent-iii-rt-rt-3491/>.
● Yirka, Tonya. "Tempered Glass Strength Specifications." EHow. Demand Media, 29 Nov. 2010. Web. 21 Apr. 2012. <http://www.ehow.com/list_7575774_tempered-glass-strength-specifications.html>.
![Page 17: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/17.jpg)
Works CitedPictures:
– http://news.bbc.co.uk/cbbcnews/hi/pictures/galleries/newsid_2821000/2821417.stm
– http://www.google.com/imgres?q=the+knight+bus&um=1&hl=en&sa=N&qscrl=1&nord=1&rlz=1T4ADSA_enUS373US374&biw=1024&bih=569&tbm=isch&tbnid=BOtF3rh9PhTGXM:&imgrefurl=http://wizardinglife.com/2011/09/wizarding-methods-of-travel-evaluated/&docid=v_yLM3MO1TWT9M&imgurl=http://wizardinglife.com/wp-content/uploads/2011/09/knight-bus.jpg&w=400&h=339&ei=kwWWT_zXE4qN6QHop-DGDg&zoom=1&iact=rc&dur=171&sig=112332215653833233722&page=2&tbnh=170&tbnw=219&start=8&ndsp=13&ved=1t:429,r:2,s:8,i:110&tx=134&ty=157
– http://www.google.com/imgres?q=harry+potter+and+the+prisoner+of+azkaban&um=1&hl=en&sa=X&qscrl=1&nord=1&rlz=1T4ADSA_enUS373US374&biw=1024&bih=569&tbm=isch&tbnid=TK_tNWBTIEnggM:&imgrefurl=http://www.rottentomatoes.com/m/harry_potter_and_the_prisoner_of_azkaban/&docid=nHO-XaARcUHyfM&imgurl=http://content6.flixster.com/movie/10/93/71/10937100_det.jpg&w=180&h=266&ei=1waWT9SoCuW26QH26ryODg&zoom=1&iact=rc&dur=688&sig=112332215653833233722&page=1&tbnh=165&tbnw=112&start=0&ndsp=13&ved=1t:429,r:16,s:0,i:139&tx=88&ty=108
– http://wiki.answers.com/Q/What_is_the_weight_of_a_double_decker_bus
– http://hypertextbook.com/facts/2006/DanielTouger.shtml
– http://www.google.com/imgres?q=the+knight+bus&start=188&um=1&hl=en&biw=1249&bih=592&addh=36&tbm=isch&tbnid=Bg0buyu5CRo-FM:&imgrefurl=http://news.bbc.co.uk/cbbcnews/hi/pictures/galleries/newsid_3552000/3552585.stm&docid=h3sAspC-ViRAUM&imgurl=http://news.bbc.co.uk/media/images/39963000/jpg/_39963687_harryonknightbus2.jpg&w=350&h=250&ei=ar2gT4fBAaT50gGB642yCQ&zoom=1&iact=rc&dur=292&sig=107901962098801536091&page=8&tbnh=141&tbnw=201&ndsp=26&ved=1t:429,r:6,s:188,i:18&tx=147&ty=52
– http://www.google.com/imgres?q=physics&start=217&um=1&hl=en&sa=N&biw=1249&bih=592&addh=36&tbm=isch&tbnid=M1IdrwrZHlo7fM:&imgrefurl=http://www.e-radiography.net/radsafety/rad_physics.htm&docid=KedQ4_IAiBoCHM&imgurl=http://www.e-radiography.net/radsafety/rad_physics2.gif&w=332&h=400&ei=RsOgT9GwL4G0gwfj4YyRCQ&zoom=1&iact=hc&vpx=387&vpy=109&dur=650&hovh=246&hovw=204&tx=55&ty=132&sig=107901962098801536091&page=9&tbnh=136&tbnw=85&ndsp=29&ved=1t:429,r:16,s:217,i:100
– http://www.google.com/imgres?q=conclusion&um=1&hl=en&biw=1249&bih=592&tbm=isch&tbnid=BZlppWzngyGC-M:&imgrefurl=http://taufikthebeta.blogspot.com/2012/02/drawing-conclusion.html&docid=PE8Ye5HWDUO5oM&imgurl=http://1.bp.blogspot.com/-ZTZzH7VhUT4/T0o-qLgb4JI/AAAAAAAAAFY/UlkCQiZI0hI/s400/fc9conclusion_imagen.jpg&w=358&h=283&ei=jcWgT8CjDtC_gQetyYSqCQ&zoom=1&iact=hc&vpx=528&vpy=166&dur=1915&hovh=200&hovw=253&tx=121&ty=120&sig=107901962098801536091&page=1&tbnh=105&tbnw=131&start=0&ndsp=24&ved=1t:429,r:3,s:0,i:139
![Page 18: Harry Potter and the Prisoner of Askaban: The Knight Bus By: Amanda Speed pd.3.](https://reader036.fdocuments.us/reader036/viewer/2022062511/55177d835503463e368b50ab/html5/thumbnails/18.jpg)
• http://www.google.com/imgres?q=the+knight+bus&start=123&um=1&hl=en&safe=active&sa=N&tbm=isch&tbnid=GLig9Xc8lzlZSM:&imgrefurl=http://wizardinglife.com/2011/01/loved-ones-say-goodbye-to-beloved-knight-bus-driver/&docid=skhwNqaYBwJi5M&imgurl=http://wizardinglife.com/wp-content/uploads/2011/01/jimmy_gardner_news_jpg_display.jpg&w=300&h=217&ei=UauWT9faCOXh0QHZvIHTDg&zoom=1&biw=1280&bih=599&iact=rc&dur=344&sig=108550289589178820660&page=6&tbnh=126&tbnw=173&ndsp=26&ved=1t:429,r:4,s:123,i:66&tx=90&ty=101
• http://www.google.com/imgres?q=harry+potter+and+the+prisoner+of+azkaban&um=1&hl=en&sa=N&biw=1249&bih=592&tbm=isch&tbnid=h4D7ENHgA4-v_M:&imgrefurl=http://www.fanpop.com/spots/harry-potter/images/5026234/title/harry-potter-prisoner-azkaban&docid=1VxBRpr2wB3P8M&imgurl=http://images2.fanpop.com/images/photos/5000000/Harry-Potter-and-the-Prisoner-of-Azkaban-harry-potter-5026234-720-480.jpg&w=720&h=480&ei=4rqgT77EEsaPgwf7g72mCQ&zoom=1&iact=hc&vpx=280&vpy=282&dur=642&hovh=183&hovw=275&tx=180&ty=140&sig=107901962098801536091&page=3&tbnh=124&tbnw=165&start=54&ndsp=26&ved=1t:429,r:14,s:54,i:288
• http://www.google.com/imgres?q=the+knight+bus&um=1&hl=en&biw=1249&bih=592&tbm=isch&tbnid=LWLXySw5O6_sPM:&imgrefurl=http://www.hp-lexicon.org/wizworld/knight_bus.html&docid=Cv_EwDrkftqLAM&imgurl=http://www.hp-lexicon.org/images/chapters/pa/c03--the-knight-bus.jpg&w=350&h=334&ei=jbygT8XqNcbg0QH__vGcCQ&zoom=1&iact=rc&dur=103&sig=107901962098801536091&page=1&tbnh=109&tbnw=114&start=0&ndsp=24&ved=1t:429,r:0,s:0,i:81&tx=61&ty=67
• http://www.google.com/imgres?q=the+knight+bus&um=1&hl=en&biw=1249&bih=592&tbm=isch&tbnid=pIUVUzUoFFuRpM:&imgrefurl=http://www.david-edward-byrd.com/warners7-3.html&docid=RIAblzz4qEXKqM&imgurl=http://www.david-edward-byrd.com/gallery/warners7-3-lrg.jpg&w=300&h=392&ei=jbygT8XqNcbg0QH__vGcCQ&zoom=1&iact=rc&dur=217&sig=107901962098801536091&page=2&tbnh=138&tbnw=113&start=24&ndsp=28&ved=1t:429,r:1,s:24,i:141&tx=77&ty=117
• http://www.google.com/imgres?q=wet+road&um=1&hl=en&biw=1249&bih=592&tbm=isch&tbnid=JvqOtqYsTtpBuM:&imgrefurl=http://www.wunderground.com/wximage/viewsingleimage.html%3Fmode%3Dsingleimage%26handle%3Dgemini%26number%3D1227&docid=zl3gLEiMFwJw_M&imgurl=http://icons-ak.wunderground.com/data/wximagenew/g/gemini/1227.jpg&w=640&h=421&ei=i76gT5qlKeT40gH7vp2LCQ&zoom=1&iact=hc&vpx=94&vpy=177&dur=122&hovh=182&hovw=277&tx=160&ty=111&sig=107901962098801536091&page=1&tbnh=112&tbnw=149&start=0&ndsp=21&ved=1t:429,r:0,s:0,i:120
• http://www.google.com/imgres?q=shattered+glass&um=1&hl=en&biw=1249&bih=592&tbm=isch&tbnid=V7FPEdym0sYXwM:&imgrefurl=http://newmichael.com/shattered-glass&docid=FfjZHDoREwHk9M&imgurl=http://newmichael.com/wp-content/uploads/2012/02/Shattered-Glass2.jpg&w=400&h=300&ei=-cOgT-nlIpK-gAemwuC7CQ&zoom=1&iact=hc&vpx=358&vpy=173&dur=1121&hovh=194&hovw=259&tx=152&ty=128&sig=107901962098801536091&page=1&tbnh=114&tbnw=152&start=0&ndsp=23&ved=1t:429,r:2,s:0,i:137
• http://www.google.com/imgres?q=woman+in+front+of+bus&um=1&hl=en&biw=1249&bih=592&tbm=isch&tbnid=Hc7bYlCtuLYvtM:&imgrefurl=http://newsfeed.time.com/2011/10/21/a-new-york-city-bus-gives-women-the-back-seat/&docid=uGoBMatDfIhvkM&imgurl=http://timenewsfeed.files.wordpress.com/2011/10/new_york_bus.jpg%253Fw%253D455%2526h%253D376%2526crop%253D1&w=455&h=376&ei=F8WgT9pmj7vQAa7m5akJ&zoom=1&iact=rc&dur=1&sig=107901962098801536091&page=1&tbnh=122&tbnw=148&start=0&ndsp=21&ved=1t:429,r:14,s:0,i:97&tx=100&ty=41