Premium Essay

The Physics of Tackling in American Football

In:

Submitted By hergotbt
Words 1298
Pages 6
Brandon Hergott
The Physics of Tackling in American Football The game that America has come to know and love may have more behind it than everyday viewers and fans realize. Physics fuels every aspect of the game of football and is evident in the collisions that take place on every play. Watching a game of football can be a great learning tool to anyone interested in better understanding the laws of physics. Many great examples are provided on every snap. Mass, force, momentum, velocity and torque all play significant roles in the tackling action performed by players and the better you understand these terms the better you can begin to understand the game itself (Gay). Most of what football players and coaches know about tackling is more instinctive than anything. They understand more about the physics of the process more than they realize. Force, mass, acceleration, momentum, torque, velocity, inertia and center of mass are important terms that become relevant when discussing the physics of tackling in football (Gay). Acceleration is the rate of change of velocity in a certain period of time. Force in football can be described as the influence that one player has on another while causing him to accelerate. The amount of substance an object is made up of is the mass. Momentum comes as the result of the product of the mass of a moving object and its velocity. Inertia is the resistance of a moving object to a change in speed or direction, and also the resistance of a stationary object to being moved. Torque is a force that produces a twisting rotation motion. The speed an object travels over a distance during a measured time is velocity. Center of mass is the area of mass of an object that exerts the maximum force.
These terms are translated into coaching instructions for players to better understand how to make the most out of each attempted tackle and

Similar Documents

Premium Essay

How Does Soccer Affect The Mind

...According to classroom.com soccer is known as one of the most popular sports in the world. The origin known as football, began outside the United States. It is played in various countries with individuals of all ages. The rule of soccer is for each team to consist of 11 players on each side of the field. The point of the game is each individual must be able to score the ball into the goal without using their hands or arms. Soccer is a very complicated sport because it deals with so much physics. Every movement that is made when playing soccer deals with a lot of motion, speed, velocity, and acceleration. Soccer is related to motion because the ball changes its position when moving across the field. Soccer incorporates the speed of the ball...

Words: 1505 - Pages: 7

Premium Essay

Nfl Player Safety and the Effects of Concussions

...NFL Player Safety and the Effects of Concussions An increasingly popular topic in the realm of sports fans has begun to unravel. The National Football League recently has begun to introduce new rules and regulations for their athletes to start abiding by to ensure the continued safety of the player’s health. Although most find this change in the game of professional football as a positive step forward, others see this as a diminishment of the sanctity of NFL football. New rules and regulations that have been introduced into NFL are vital to athletes involved in the sport and help them to play with lowered risks of long term injuries that could possibly affect not only them but also the league in the future as well. The reasons for these changes of rules in the NFL come from various points of emphasis. Legal actions taken by former NFL athletes have plagued the league and its reputation as of late, prompting this proactive approach to reduce the risk of long term effects on players. With all of the legal actions being performed on the NFL some felt that these changes that needed to happen would solely be kick started because of the legal aspect of it as represented by this quote, “"I don't think it'll be driven by public opinion, but by lawyers and insurance companies," David Meggyesy, who played linebacker for the St. Louis Cardinals in the nineteen-sixties.” (McGrath, 2011). One of the main concerns by the NFL is the long term affects that concussions have been shown to have...

Words: 3606 - Pages: 15

Free Essay

Concussions: an Analytical Discussion

...(Galliford, Buffalorumblings). His most recent one just this past August effectively ended his football career. This is just one example of the many in which multiple or severe concussions have cut short careers in sports. The issue of player safety in sport has become a topic of controversy and debate in recent years. Many professional leagues such as the NFL and the NHL have adopted strict concussion test protocols and procedures for its players. Player safety has no doubt become a major concern in contact sports. The problem is, many of these regulations have yet to address what happens after playing careers are over. What happens to former players’ mental and physical health after they retire? How do players whom have suffered multiple concussions playing contact sports live their lives as opposed to players whom have played non-contact sports such as golf or baseball? What will be questioned in this analysis is do known players that have suffered multiple and/or severe concussions throughout their playing careers due to playing a contact sport develop abnormally high levels of mental and physical health problems at an early age? Previous history on the attempts to lower the frequency of severe injury and concussions have shown advances in equipment and medicine. In the middle of the twentieth century, players participating in contact sports such as football and hockey rarely wore any protective equipment. Due to the increased violence of these sports...

Words: 3098 - Pages: 13

Free Essay

Lost in Translation

...matter B. happen C. listen D. below 3/ A. explain B. problem C. study D. worry 4/ A. habit B. become C. learner D. mother 5/ A. fifteen B. fifty C. center D. biggest 6/ A. student B. member C. prefer D. teacher 7/ A. subject B. hello C. teacher D. thousand 8/ A. lesson B. woman C. repair D. father 9/ A. above B. sister C. widen D. very 10/ A. corner B. answer C. doctor D. prepare III/ Select the synonym of the following bold and underlined word in each sentence in the unit: 1/ When you meet your friends, which topic do you often talk about? – Films. A. plays B. movies C. theatres D. stories 2/ I study in class 10A with forty-five other students. A. learn B. teach C. instruct D. review 3/ I study many subjects such as Math, Physics, Chemistry, Biology, Vietnamese Literature, History, Geography etc. A. a lot B. a lot of C. lots D. much 4/ But I like English best because it’s an important means of international communication. A. want B. need C. enjoy D. wish 5/ I don’t really like getting up early but I have to because I often have lessons at 7.15. A. late B. later C. first D. soon 6/ I’m the headmaster of Chu Van An High School. A. head B. master C. teacher D....

Words: 65456 - Pages: 262

Premium Essay

Cults and Sects

...Crime and Deviance Revision SCLY 4: Crime and Deviance with Methods in Context Sociology Department Greenhead College SCLY 4: Crime and Deviance with Methods in Context Remember: You have to revise everything, because you have no choice on the exam paper. The specification 1 Different theories of crime, deviance, social order and social control * Different definitions of crime, deviance, social order and social control * The distinction between sociological theories of crime and other theories (eg biological, psychological); crime and deviance as socially constructed * Functionalist theories of crime: Durkheim, anomie, collective conscience; Merton’s strain theory; manifest and latent functions; functionalist subcultural theories * Marxist and neo-Marxist theories of crime: classical Marxism, laws reflecting class interests; Neo-Marxism, hegemony, the CCCS studies, critical and new criminology * Interactionist theories of crime: labelling theory, the self-fulfilling prophecy * Feminist theories of crime: patriarchy, male control of women’s lives * Control theory and other contemporary approaches to crime: social bonds, communitarianism, situational prevention; postmodern theories; Foucault on individualisation and surveillance * Realist theories: New Left Realism and Right Realism * The relevance of the various theories to understanding different types of crime, and their implications for social policy. 2 The social distribution...

Words: 25825 - Pages: 104

Premium Essay

U.S Supreme Court Case Buck V. Bell

...Crime and Deviance Revision SCLY 4: Crime and Deviance with Methods in Context Sociology Department Greenhead College SCLY 4: Crime and Deviance with Methods in Context Remember: You have to revise everything, because you have no choice on the exam paper. The specification 1 Different theories of crime, deviance, social order and social control * Different definitions of crime, deviance, social order and social control * The distinction between sociological theories of crime and other theories (eg biological, psychological); crime and deviance as socially constructed * Functionalist theories of crime: Durkheim, anomie, collective conscience; Merton’s strain theory; manifest and latent functions; functionalist subcultural theories * Marxist and neo-Marxist theories of crime: classical Marxism, laws reflecting class interests; Neo-Marxism, hegemony, the CCCS studies, critical and new criminology * Interactionist theories of crime: labelling theory, the self-fulfilling prophecy * Feminist theories of crime: patriarchy, male control of women’s lives * Control theory and other contemporary approaches to crime: social bonds, communitarianism, situational prevention; postmodern theories; Foucault on individualisation and surveillance * Realist theories: New Left Realism and Right Realism * The relevance of the various theories to understanding different types of crime, and their implications for social policy. 2 The social distribution...

Words: 25825 - Pages: 104

Free Essay

Grammer

...Grammar Book MASTERING THE RULES THAT UNLOCK THE POWER OF WRITING THE LITTLE GOLD Brandon Royal Published by Maven Publishing © 2010 by Brandon Royal All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical — including photocopying, recording, or any information storage and retrieval system — without permission in writing from the author or publisher. Reviewers, however, may quote brief passages in a review, and individuals wanting to reference material from this book for academic or non-commercial purposes may do so provided the book, with title and author’s name, is cited as a source. Published by: Maven Publishing 4520 Manilla Road Calgary, Alberta, Canada T2G 4B7 www.mavenpublishing.com Library and Archives Canada Cataloguing in Publication: Royal, Brandon The little gold grammar book : mastering the rules that unlock the power of writing / by Brandon Royal. ISBN 978-1-897393-30-7 Library of Congress Control Number: 2009909354 In addition to the paperback edition, this book is available as an eBook and in the Adobe PDF file format. Technical Credits: Cover Design: George Foster, Fairfield, Iowa, USA Editing: Jonathan K. Cohen, Irvine, California, USA This book’s cover text was set in Minion. The interior text was set in Scala and Scala Sans. Contents Introduction Chapter 1: The 100-Question Quiz Subject-Verb Agreement Pronoun Usage Modification Parallelism Comparisons Verb Tenses Diction...

Words: 42042 - Pages: 169

Premium Essay

The Design Guide

...1 INDEX Page INTRODUCTION 1. 2. YOUR CV USING THIS GUIDE TO CREATE A CV AND GETTING HELP 3 3 THE DESIGN GUIDE 3. 4. GETTING STARTED 4 Fig 1. Your Lifeline PROVIDING EVIDENCE THAT 4 CROSSES CULTURES Fig 2. Explaining Your Results COVERING LETTERS 6 Fig 3: Covering Letter Layout Fig 4: Opening Paragraph of Covering Letter Fig 5: Middle Paragraphs of Covering Letter Fig 6: Closing Paragraphs of Covering Letter CV FORMAT – 1 PAGE OR 2? 8 IMAGE AND FONTS 9 THE HEADER 9 Fig. 7: Header Fig. 8: Header plus ORGANISING YOUR MATERIAL 9 AND HEADINGS TACKLING WORK PERMIT ISSUES 10 Fig. 9 Nationality and Work Permission Data WRITING PERSONAL PROFILES 12 Fig 10. Personal Profile Statement Fig 11: Career Objective Statement Fig 12: Career Summary Fig 13: Expertise Summary BEAUTIFUL BULLETS 13 Fig 14: Bullet 1 Fig 15: A Powerful Summary SHOWING MANAGERIAL CAPABILITIES 14 REFERENCES 14 Fig 16. References SCANNING YOUR WORK 15 CV EXAMPLES PROFILE EXAMPLES EXAMPLE COVERING LETTER 16-28 29-30 31 5. 6. 7. 8. 9. 10. 11. 12. 13. 14 15. CV EXAMPLES 2 INTRODUCTION 1. YOUR CV Welcome. If you are a postgraduate student at The Birmingham Business School, one of the tasks you are likely to want to tackle is the design of a CV to ‘market’ your skills for the future. Even if you do not intend to try and seek work in the UK, you are likely to find that you can learn from the self-marketing skills our Careers Advisers and Consultants will emphasise in the workshop sessions offered...

Words: 9018 - Pages: 37

Free Essay

Mr.Kedar

...Ministry of External Relations is responsible for managing the foreign relations of Brazil. Brazil is a significant political and economic power in Latin America and a key player on the world stage.[1] Brazil's foreign policy reflects its role as a regional power and a potential world power and is designed to help protect the country's national interests, national security, ideological goals, and economic prosperity. Between World War II and 1990, both democratic and military governments sought to expand Brazil's influence in the world by pursuing a state-led industrial policy and an independent foreign policy. Brazilian foreign policy has recently aimed to strengthen ties with other South American countries, engage in multilateral diplomacy through the United Nations and the Organization of American States, and act at times as a countervailing force to U.S. political and economic influence in Latin America. Contents * 1 Overview * 2 Foreign policy * 2.1 Lula da Silva administration * 2.2 Rousseff administration * 3 Regional policy * 4 Diplomatic relations * 5 United Nations politics * 6 Outstanding international issues * 7 Foreign aid * 8 Participation in international organizations * 9 Bilateral relations * 10 See also * 11 References * 12 External links Overview Brazil's international relations are based on article 4 of the Federal Constitution, which establishes non-intervention, self-determination, international...

Words: 11631 - Pages: 47

Free Essay

Gmat

...CR TOPIC-WISE EXERCISES (700-800 LEVEL) 1 The 700-800 Club Critical Reasoning Critical Reasoning Topic 1: CONCLUSION 1. • • • • • 2. In the United States, about $5,200 per person per year is spent on health care, while in Britain the amount is about half that. A recent study indicated that middle-aged white Americans have a significantly higher rate of diabetes and heart disease than do middle-aged white Britons. Even after eliminating from the study the lifestyle differences of diet, exercise, smoking, and drinking, the data showed that the Americans have poorer health than their British counterparts. The statements above, if true, best support which of the following assertions? Health care spending in the United States should be reduced by 50%. More expensive health care causes a higher incidence of certain diseases. The money spent on health care in the United States is not being used effectively. The average health care spending for middle-aged white Americans is probably less than the average health care spending for Americans in general. Something other than diet, exercise, smoking, and drinking must account for the difference in health for the two groups in the study. Spokesperson: In the 2006 election of the city mayor, 55% of the voters were female. All the voters were between ages 18 and 70 and 2/3 of them supported the incumbent mayor. The incumbent mayor won the election with a substantially greater number of votes than any other...

Words: 52762 - Pages: 212

Premium Essay

The World in 2008

...EDITOR'S INTRODUCTION Two big events will frame the year ahead: America’s presidential election and the summer Olympic games in Beijing. The race for the White House will be a marathon, from the front-loaded primary season in January and February to the general election in November. The betting is that the winner will be a Democrat—with a strong chance that a Clinton will again be set to succeed a Bush as leader of the free world. China, meanwhile, will hope to use the Olympics to show the world what a splendid giant it has become. It will win the most gold medals, and bask in national pride and the global limelight. But it will also face awkward questions on its repressive politics. America and China will be prime players in the matters that will concentrate minds around the world in 2008. One of these is the world economy, which can no longer depend on America, with its housing and credit woes, to drive growth. America should—just—avoid recession, but it will be China (for the first time the biggest contributor to global growth) along with India and other emerging markets that will shine. Another focus of attention will be climate change. As China replaces America as the world’s biggest producer of greenhouse gases, serious efforts on global warming depend on the serious involvement of those two countries. If 2007 was the year when this rose to the top of the global agenda, in 2008 people will expect action. It is striking that green is a theme that links all the contributions...

Words: 89030 - Pages: 357

Free Essay

Made to Stick

...This book has been optimized for viewing at a monitor setting of 1024 x 768 pixels. MADE TO STICK random house a new york MADE TO STICK Why Some Ideas Survive and Others Die • • • C H I P H E AT H & D A N H E AT H Copyright © 2007 by Chip Heath and Dan Heath All rights reserved. Published in the United States by Random House, an imprint of The Random House Publishing Group, a division of Random House, Inc., New York. Random House and colophon are registered trademarks of Random House, Inc. Library of Congress Cataloging-in-Publication Data Heath, Chip. Made to stick : why some ideas survive and others die / Chip Heath & Dan Heath p. cm. Includes index. eISBN: 978-1-58836-596-5 1. Social psychology. 2. Contagion (Social psychology). 3. Context effects (Psychology). I. Heath, Dan. II. Title. HM1033.H43 2007 302'.13—dc22 2006046467 www.atrandom.com Designed by Stephanie Huntwork v1.0 To Dad, for driving an old tan Chevette while putting us through college. To Mom, for making us breakfast every day for eighteen years. Each. C O N T E N T S INTRODUCTION WHAT STICKS? 3 Kidney heist. Movie popcorn. Sticky = understandable, memorable, and effective in changing thought or behavior. Halloween candy. Six principles: SUCCESs. The villain: Curse of Knowledge. It’s hard to be a tapper. Creativity starts with templates. CHAPTER 1 SIMPLE 25 Commander’s Intent. THE low-fare airline. Burying the lead and the inverted pyramid. It’s the...

Words: 91454 - Pages: 366

Premium Essay

Drucker

...Effective Executive Managing for Results The Practice of Management Concept of the Corporation ECONOMICS, POLITICS, SOCIETY Post-Capitalist Society Drucker on Asia The Ecological Revolution The New Realities Toward the Next Economics The Pension Fund Revolution Men, Ideas, and Politics The Age of Discontinuity Landmarks of Tomorrow America’s Next Twenty Years The New Society The Future of Industrial Man The End of Economic Man AUTOGRAPHY Adventures of a Bystander FICTION The Temptation to Do Good The Last of all Possible Worlds --------------------------------------------------------------------------- A DF Books NERDs Release THE ESSENTIAL DRUCKER. Copyright © 2001 Peter F. Drucker. All rights reserved under international and Pan-American Copyright Conventions. By payment of the required fees, you have been granted the non-exclusive, non-transferable license to access and read the text of this e-book on screen. No part of this text may be reproduced, transmitted, down-loaded, decompiled, reverse engineered, or stored in or introduced into any information storage and retrieval system, in any form or by any means, whether electronic or mechanical, now known or hereinafter invented, without the express written permission of PerfectBound™. PerfectBound™ and the PerfectBound™ logo are trademarks of HarperCollins Publishers Mobipocket Reader edition v 1. May 2001 ISBN: 0-0607-7132-1 Print...

Words: 109564 - Pages: 439

Premium Essay

Quiet: Power of Introverts

...MORE ADVANCE NOISE FOR QUIET “An intriguing and potentially lifealtering examination of the human psyche that is sure to benefit both introverts and extroverts alike.” —Kirkus Reviews (starred review) “Gentle is powerful … Solitude is socially productive … These important counterintuitive ideas are among the many reasons to take Quiet to a quiet corner and absorb its brilliant, thought-provoking message.” —ROSABETH MOSS KANTER, professor at Harvard Business School, author of Confidence and SuperCorp “An informative, well-researched book on the power of quietness and the 3/929 virtues of having a rich inner life. It dispels the myth that you have to be extroverted to be happy and successful.” —JUDITH ORLOFF, M.D., author of Emotional Freedom “In this engaging and beautifully written book, Susan Cain makes a powerful case for the wisdom of introspection. She also warns us ably about the downside to our culture’s noisiness, including all that it risks drowning out. Above the din, Susan’s own voice remains a compelling presence—thoughtful, generous, calm, and eloquent. Quiet deserves a very large readership.” —CHRISTOPHER LANE, author of Shyness: How Normal Behavior Became a Sickness 4/929 “Susan Cain’s quest to understand introversion, a beautifully wrought journey from the lab bench to the motivational speaker’s hall, offers convincing evidence for valuing substance over style, steak over sizzle, and qualities that are, in America, often derided. This book is brilliant...

Words: 118436 - Pages: 474

Premium Essay

Case

...Union, was central to the Cold War. It tracks the various arenas of the Cold War in different parts of the world. The chapter views the NonAligned Movement (NAM) as a challenge to the dominance of the two superpowers and describes the attempts by the non-aligned countries to establish a New International Economic Order (NIEO) as a means of attaining economic development and political independence. It concludes with an assessment of India’s role in NAM and asks how successful the policy of nonalignment has been in protecting India’s interests. The end of the Second World War led to the rise of two major centres of power. The two pictures above symbolise the victory of the US and the USSR in the Second World War. 1. American soldiers raising the US flag during the Battle of Iwo Jima, Japan, on 23 February 1945 Credit: Raising the Flag on Iwo Jima, Photograph by Joe Rosenthal/The Associated Press 2. Soviet soldiers raising the USSR flag on the...

Words: 52386 - Pages: 210