...pictures of the experiment. Soccer is a sport, played with a maximum of ten field players and one goalkeeper, with a circular ball. The object of the games is to score as many goals as possible into your opponents net, and...
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...is more than a subject we study in class, it is also a powerful tool that can help us to gain a better understanding of the everyday world. Physics can be seen in a lot of simple games that we play all the time. One of my favorite games that I almost play on a daily basis is pool. The physics associated with pool is mainly about the collisions between the pool balls. When two pool balls hit each other or collide the collision between them is known to be an elastic collision. According to Billiards in the Classroom, "elastic collisions are collisions in which both momentum and kinetic energy are conserved. The total system kinetic energy before the collision equals the total system kinetic energy after the collision." Therefore, we can assume that the collisions that happens between pool balls are absolutely elastic. Therefore, the momentum is always going to be conserved when it comes to elastic collisions between pool balls, which is also the case with regular or inelastic collisions. If we assume, for instance, that friction is eliminated, we can use this fact along with the fact that collisions between pool balls are perfectly elastic to find the trajectory...
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...It may be hard to believe but everything in the world in is motion. Even the most still objects have atoms vibrating inside of them with energy. Energy is never destroyed, just transferred to another object. For instance when shooting a basketball you are holding the ball above your head with two hands. One to hold the ball and the other to apply force, which is an example of kinetic energy. When shooting you are jumping to build up momentum for your shot, which is an example of gravitational energy. Gravitational Energy also takes place when shooting with an arch. When shot the ball goes falling back down to the ground because of gravitational pull. In order for something to move, it must be pushed or pulled along. Pushes and pulls are called...
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...Tutorial 3: Projectile motion and Laws of motion. 1. Two crickets, Chirpy and Milada, jump from the top of a vertical cliff. Chirpy just drops from a vertical cliff with a height of 350 m, while Milada jumps horizontally with an initial speed of 8.0 m/s . How far from the base of the cliff will Milada hit the ground? [67.6 m] 2. A ball is given an initial velocity of 30.0 m/s at an angle of 60.0o with respect to the horizontal. What are the horizontal and vertical displacements after 5.00 s? [75.0 m, 7.40 m] 3. A soccer player kicks the ball toward a goal that is 16.8 m in front of him. The ball leaves his foot at a speed of 16.0 m/s and an angle of 28.0° above the ground. Find the speed of the ball when the goalie catches it in front of the net. [14.7 m/s] 4. The best leaper in the animal kingdom is the puma, which can jump to a height of 3.7 m when leaving the ground at an angle of 45°. With what speed must the animal leave the ground to reach that height? [12 m/s] 5. A fireman d = 50.0 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of i = 30.0° above the horizontal as shown in figure. If the speed of the stream as it leaves the hose is vi = 40.0 m/s, at what height will the stream of water strike the building? [18.6 m] 6. A projectile is launched from ground level at an angle of 15.0° above the horizontal. It returns to ground level. To what value should the launch angle be adjusted...
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...BIOMECHANICS The term biomechanics means the study of the structure and function of biological systems using the methods of mechanics. Biomechanics studies the process of kinematics and used in the study of sports actions, such as the motion of throwing a baseball. Why do some golfers slice the ball? How can workers avoid developing low back pain? What cues can a physical education teacher provide to help students learn the underhand volleyball serve? Why do some elderly individuals tend to fall? We have all admired the fluid, graceful movements of highly skilled performers in various sports. We have also observed the awkward first steps of a young child, the slow progress of an injured person with a walking cast, and the hesitant, uneven gait of an elderly person using a cane. Virtually every activity class includes a student who seems to acquire new skills with utmost ease and a student who trips when executing a jump or misses the ball when attempting to catch, strike, or serve. What enables some individuals to execute complex movements so easily, while others appear to have difficulty with relatively simple movement skills? Although the answers to these questions may be rooted in physiological, psychological, or sociological issues, the problems identified are all biomechanical in nature. This book will provide a foundation for identifying, analyzing, and solving problems related to the biomechanics of human movement. Definition of Biomechanics The term biomechanics combines...
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...Simulation Model Analysis Bouncing Ball Model: Use of Zero-Crossing Detection 2012 Executive Summary In the system of a bouncing ball there are many factors which influence how the ball bounces. The 5 main components which affect how high the ball will bounce include the initial position of the ball, the initial velocity of the ball, the elasticity of the ball, the gravity of the selected area, and also the temperature of the material in which the ball was made from. These 5 major components of the basic system determine how high the ball bounces and how much energy was lost in the process of bouncing as well as allowing us to determine the relationship between these components and how each of these affects the overall system as a whole. However by changing these components of the system, it will dramatically change the overall results. In the system of a bouncing ball there already at secondary school level, illustrates Newton’s laws of motion and concepts of gravitational energy and kinetic energy with examples of objects dropped or thrown vertically and contains investigative activities about falling objects, the physics and mathematics. The fives main components which affect how high the ball will bounce they are initial position, the initial velocity, the elasticity, the gravity and the temperature of the material in which the ball was made from. These five major components of the basic system determine how high the ball bounces and how much energy was...
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...Positions on the Soccer Field There are 11 positions on the soccer field, but they always fall into four broad categories. Even in smaller games, the number of players in each category may change, but by and large, the positions do not. The Goalkeeper The goalkeeper is the only player allowed to use his hands and that can only occur within the confines of the penalty area. There are never more that two goalkeepers on the field at any time — one on each team. The goalkeeper’s uniform is different from the rest of his team’s to make it obvious which player may use his hands. The jersey, often with long sleeves, is colored to clash with the others. And since the 1970s, goalkeepers have worn gloves to both protect their hands and enhance their grip on the ball. Some of the best goalkeepers in the world are Gianluigi Buffon of Italy and Iker Casillas of Spain. The Defenders A defender’s primary duty is to win back the ball from the opposition and prevent them from scoring. Teams play with anywhere from three to five at the back and each member of the defense tends to have a different, yet equally important duty. The defenders stationed in the center of the back line (known as central defenders or center backs) tend to be some of the taller and stronger members of the team since they so frequently have to win the ball in the air. They go forward very little, except on set pieces, and hold a position of great responsibility. The defenders on the flanks (known as wingbacks...
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...1) When is the average velocity of an object equal to the instantaneous velocity? A) always B) never C) only when the velocity is constant D) only when the velocity is increasing at a constant rate 2) A new car manufacturer advertises that their car can go "from zero to sixty in 8 s". This is a description of A) average speed. B) instantaneous speed. C) average acceleration. D) instantaneous acceleration. 3) Suppose that a car traveling to the East (+x direction) begins to slow down as it approaches a traffic light. Make a statement concerning its acceleration. A) The car is decelerating, and its acceleration is positive. B) The car is decelerating, and its acceleration is negative. C) The acceleration is zero. D) A statement cannot be made using the information given. 4) Suppose that a car traveling to the West (-x direction) begins to slow down as it approaches a traffic light. Make a statement concerning its acceleration. A) The car is decelerating, and its acceleration is positive. B) The car is decelerating, and its acceleration is negative. C) The acceleration is zero. D) A statement cannot be made using the information given. 5) Suppose that an object is moving with a constant velocity. Make a statement concerning its acceleration. A) The acceleration must be constantly increasing. B) The acceleration must be constantly decreasing. C) The acceleration must be a constant non-zero value. D) The acceleration must be equal to zero. ...
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...Nanotechnology Nanotechnology has been an anticipated technology due to it giving complete and inexpensive control of the structure of matter. The thought of this technology came from the mind of Richard Feynman, a physicist, in 1959. The way Feynman first described nanotechnology was, “a process by which the ability to manipulate individual atoms and molecules might be developed, using one set of precise tools to build and operate another proportionally smaller set (History and Future of Nanotechnology, 2009).” Manufacturing at the molecular scale will enable the construction of cell repair machines, computers smaller than a cubic micron, and even personal manufacturing. Molecular manufacturing or nanomanufacturing is where it all starts. Nanomanufacturing is the manufacturing of nano-scale materials, structures, devices, and systems. There are two approaches to nanomanufacturing, the top-down approach or the bottom-up approach. The top-down approach reduces large pieces of material down to the nanoscale. This approach uses more material and can lead to waste if excess material isn’t used. The second approach, the bottom-up approach, creates products by starting at the atomic or molecular level and building the products from the ground up. This process is very time consuming. With these two approaches there are new processes that enable nanomanufacturing which are (Manufacturing at the Nanoscale): 1. Chemical vapor deposition – a process where chemicals react to produce...
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...Football * Latent Function * Dysfunction | 4-567-8 | Conflict Theory * Conflict Theory on Football | 910-11 | Interactionisnt Perspective | 12-13 | The Reasons That We Choose Functionalist Perspective | 14 | Conclusion | 15 | Reference | 16 | Introduction The topic of our report is sports and football. The reasons why we choose this topic because football is the world’s most popular sports and also is the one of most influential sports. People call football as ‘world movement’. Besides that, football has many football stars as we know such as David Beckham and Ronaldo Luiz Nazario De Lima. Football is an ancient sport. In the middle ages, the ancient Greeks and Romans are known to have played many ball games and some which include the use of the feet. Until early19th century, football is quite popular in Europe and some Latin or American countries especially in British. In 1848, ‘Cambridge Rules’ was born and it record all the rules of playing football. In 1863, the British Football Association was established and began the football league. In that time, football has become more professional in the world. As the sports developed rapidly around the world, the International Football was established in 1904.In 1908, football this sport was officially included in the Olympic Games projects. Where is the origin of football? Someone say the origin of football is Rome or maybe Greeks. However, many data indicate that the...
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...PHYSIC AL CONSTANTS CONSTANT Speed of light Elementary charge Electron mass Proton mass Gravitational constant Permeability constant Permittivity constant Boltzmann’s constant Universal gas constant Stefan–Boltzmann constant Planck’s constant Avogadro’s number Bohr radius SYMBOL c e me mp G m0 P0 k R s h 15 2p"2 NA a0 THREE-FIGURE VALUE 3.003108 m/s 1.60310219 C 9.11310231 kg 1.67310227 kg 6.67310211 N # m2/kg 2 1.2631026 N/A2 1H/m2 8.85310212 C 2/N # m2 1F/m2 1.38310223 J/K 8.31 J/K # mol 5.6731028 W/m2 # K4 6.63310234 J # s 6.0231023 mol21 5.29310211 m BEST KNOWN VALUE* 299 792 458 m/s (exact) 1.602 176 4871402 310219 C 9.109 382 151452 310231 kg 1.672 621 6371832 310227 kg 6.674 281672 310211 N # m2/kg 2 4p31027 (exact) 1/m0c2 (exact) 1.380 65041242 310223 J/K 8.314 4721152 J/K # mol 5.670 4001402 31028 W/m2 # K4 6.626 068 961332 310234 J # s 6.022 141 791302 31023 mol21 5.291 772 08591362 310211 m *Parentheses indicate uncertainties in last decimal places. Source: U.S. National Institute of Standards and Technology, 2007 values SI PREFIXES POWER 1024 1021 1018 1015 1012 109 106 103 102 101 100 1021 1022 1023 1026 1029 10212 10215 10218 10221 10224 THE GREEK ALPHABET PREFIX yotta zetta exa peta tera giga mega kilo hecto deca — deci centi milli micro nano pico femto atto zepto yocto SYMBOL Y Z E P T G M k h da — d c m μ n p f a z y Alpha ...
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...SCHAUM'S OUTLINE OF THEORY AND PROBLEMS OF COLLEGE PHYSICS Ninth Edition . FREDERICK J. BUECHE, Ph.D. Distinguished Professor at Large University of Dayton EUGENE HECHT, Ph.D. Professor of Physics Adelphi University . SCHAUM'S OUTLINE SERIES McGRAW-HILL New York St. Louis San Francisco Auckland Bogota Caracas Lisbon London Madrid Mexico City Milan Montreal New Delhi San Juan Singapore Sydney Tokyo Toronto McGraw-Hill abc Copyright © 1997, 1989, 1979, 1961, 1942, 1940, 1939, 1936 by The McGraw-Hill Companies, Inc All rights reserved. Manufactured in the United States of America. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of the publisher. 0-07-1367497 The material in this eBook also appears in the print version of this title: 0-07-008941-8. All trademarks are trademarks of their respective owners. Rather than put a trademark symbol after every occurrence of a trademarked name, we use names in an editorial fashion only, and to the benefit of the trademark owner, with no intention of infringement of the trademark. Where such designations appear in this book, they have been printed with initial caps. McGraw-Hill eBooks are available at special quantity discounts to use as premiums and sales promotions, or for use in corporate training programs. For more...
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...Fifa 14 Coins are accessible at the online 2014 FIFA World Cup Brazil is to be released on the15th of April, 2014 on the Xbox 360 and PlayStation 3. The devotees can figure out a two-month head start to attempt and win the trophy before the official launching takes place in Sao Paulo on the next 12th of June. 2014 FIFA World Cup of EA Sports means that the most intense set of modes appears in the title of a tournament. There is the replication of some of the most unforgettable eligible matches. Or you can captain your country to achieve. There are six paths to overcome. These include road to the FIFA World Cup, Road to Rio de Janeiro (online), captaining your Country, story of finals (online), 2014 FIFA World Cup and story of qualifying. Fifa 14 Coins are available online now. The players can buy cheap fifa coins to accumulate the potential players to make the dream FIFA 14 team. The way like road to the FIFA World Cup indicates that you can direct one of two hundred and three world cup nations via the qualifying rounds. And it is included on FIFA World Cup magnificence. There are thirty-two players that can play locally. And it is introducing a really customized and distinctive experience. As the road is made via the 2014 FIFA World Cup, the talk radio of EA Sports is to introduce the country-basis tournament updates. It includes fifty hours more of the recorded dialogue. And it becomes accustomed to the performance of your team. The devotees are to rejoice in the streets...
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...contributes to the widening focus of research by presenting new data and explanations of football-related violence. Episodes of violence associated with football are relatively infrequent, but the occasional violent events which attract great media attention have their roots in the rituals of the matches, the loyalties and identities of players and crowds and the wider cultures and politics of the host societies. This book provides a unique cross-national examination of patterns of order and conflict surrounding football matches from this perspective with examples provided by expert contributors from Scotland, England, Norway, the Netherlands, Italy, Argentina and the USA. This book will be of interest to an international readership of informed soccer and sport enthusiasts and students of sport, leisure, society, deviance and culture. Richard Giulianotti, Norman Bonney and Mike Hepworth are respectively Research Assistant, Senior Lecturer and Reader in the Department of Sociology, Aberdeen University, Scotland. Football, Violence and Social Identity Edited by Downloaded by [University of Ottawa] at 14:44 24 March 2014 Richard Giulianotti, Norman Bonney and Mike Hepworth London and New York First published 1994 by Routledge 11 New...
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...MANAGEMENT OF FRACTURES CASTS A cast is used to immobilize and hold bone fragments during reduction. It is made up of layers of plaster or fiberglass (water-activated polyurethane resin) bandages molded to the body part that it encases. Indications * To apply uniform compression of soft tissues * To permit early mobilization * To correct and prevent deformities * To support and stabilize weak joints Types of Casts 1 Short and long -arm cast for the upper limbs. : Extends from below the elbow to the proximal palmar crease. 2 Gauntlet Cast (thumb spica): from below the elbow to the proximal palmar crease. 3 Short and Long-leg Cast for the lower limbs. 4 Body Cast: Encircles the trunk stabilizing the spine. 5 Spica Cast: Incorporates the trunk and extremity. 6 Shoulder spica: encloses trunk, shoulder, and elbow. 7 Hip spica: encloses trunk and a lower extremity and can be single or double. Single extends from nipple line to include pelvis and one thigh while double includes both thighs and lower legs. 8 Cast-brace: External support about a fracture that is constructed with hinges to permit early motion of joints, early mobilization, and independence. 9 Cylinder Cast: Can be used for upper or lower extremity e.g. fracture or dislocation of knee or elbow dislocation. Complications of Casts * Pressure of cast may cause necrosis, pressure sores, and nerve palsies. * Compartment syndrome * Cast syndrome associated especially of...
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