How to Define Acceleration

Acceleration is the rate of change of velocity as a function of time. It is a vector, meaning that it has both magnitude and direction. It is measured in meters per second squared or meters per second (the objects speed or velocity) per second. In calculus terms, acceleration is the second derivative of position concerning time or, alternately, the first derivative of the velocity concerning time. Acceleration—Change in Speed The everyday experience of acceleration is in a vehicle. You step on the accelerator, and the car speeds up as increasing force is applied to the drive train by the engine. But deceleration is also acceleration - the velocity is changing. If you take your foot off the accelerator, the force decreases and velocity is reduced over time. Acceleration, as heard in ads, follows the rule of the change of speed (miles per hour) over time, such as from zero to 60 miles per hour in seven seconds. Units of Acceleration The SI units for acceleration are m / s2(meters per second squared or  meters per second per second). The gal or galileo (Gal) is a unit of acceleration used in gravimetry but is not an SI unit. It is defined as 1 centimeter per second squared. 1 cm/s2 English units for acceleration are feet per second per second,  ft/s2 The standard acceleration due to gravity, or standard gravity  g0 is the gravitational acceleration of an object in a vacuum near the surface of the earth. It combines the effects of gravity and centrifugal acceleration from the rotation of the Earth. Converting Acceleration Units Value m/s2 1 Gal, or cm/s2 0.01 1 ft/s2 0.304800 1 g0 9.80665 Newtons Second Law—Calculating Acceleration The classical mechanics equation for acceleration comes from Newtons Second Law: The sum of the forces (F) on an object of constant mass (m) is equal to mass m multiplied by the objects acceleration (a). F am Therefore, this can be rearranged to define acceleration as: a F/m The result of this equation is that if no forces are acting on an object (F   0), it will not accelerate. Its speed will remain constant. If mass  is added to the object, the acceleration will be lower. If  mass  is removed from the object, its acceleration will be higher. Newtons Second Law is one of the three laws of motion Isaac Newton published in 1687 in  Philosophià ¦ Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy).   Acceleration and Relativity While Newtons laws of motion apply at speeds we encounter in daily life, once objects are traveling near the speed of light, the rules change. Thats when Einsteins special theory of relativity is more accurate. The special theory of relativity says it takes more force to result in acceleration as an object approaches the speed of light. Eventually, acceleration becomes vanishingly small and the object never quite achieves the speed of light. Under the theory of general relativity, the principle of equivalence says that gravity and acceleration have identical effects. You dont know whether or not you are accelerating unless you can observe without any forces on you, including gravity.

Ethical Issues in Social Networking - 851 Words

When social networking becomes a topic of discussion, everyone sees it as a web based interaction between human beings in order to stay in contact. However, many are not aware that social networks actually operates on different levels. (Nanda, n.d.) outlines, quite some time ago, when there were limited means of communication, social networking happens at functions where friends and family get together under one roof. Social networking has always been common but as for now, the way it is conducted has changed. In this globalization era, social networking websites such as Facebook, MySpace, Orkut and Twitter are being utilized just for any purpose especially in multi level marketing, meeting new individuals and building virtual†¦show more content†¦It creates an awkward atmosphere when meeting a client face to face due to different impressions about one another without taking considerations of their own privacy. Another ethical issue that is getting extreme today is when companies go beyond limits of checking out a person`s social network profile. It does not just stop there. Some employers ask around randomly among the employees for the log in informations into their online social network sites. Based on an article by McFarland (2012), Justin Bassett, a New York City statistician, was having interview session with the authorities of a company he is looking forward to work in. Just after a few questions he is merely asked to hand in his username and password to his Facebook profile because they have no access looking into the content of his social network site. Bassett immediately withdrew his application because he did not want to work for a company that wants to bother his personal life. As much to this, it is obvious that this organization is not being ethical enough. Violating others personal privacy is not a way to get to know a person. Everyone needs a space where they can be themselv es and just who they are out of the corporate world. Cases like this brings down a company image and causes a thorough effect to the public relations department. Public relations practitioners would go through a lot of challenges toShow MoreRelatedSocial Networking Sites and Privacy1155 Words   |  5 PagesIntroduction What do about ninety percent of us have in common? It’s the social networking sites that everyone is a part of these days, whether it’s your twelve year old nephew or your grandmother. Spending hours and hours connecting with your old friends and making new friends over the social networking sites has become a part of everyone’s daily routine. Nonetheless, recently privacy concerns over the social networking sites have taken its peak. Background It all started several decades back,Read MoreEthical Issues Of Social Media963 Words   |  4 PagesEthical Issues in Social Media Emerging Information Technologies are faced with numerous ethical issues. One of the most centers of ethical debate in Information Technology is social networks. Social networking has changed from a niche phenomenon to mass adoption. Although the concept of social networking was formulated in the 1960s, the advent of fast internet has sent the concept viral. Currently, social networks have been dogged with myriad ethical issues. Privacy issues are the epicenter of theseRead MoreEssay on Ethical Issues with Social Media1505 Words   |  7 PagesCurrent Ethical Issues with Social Media People are increasingly sharing their lives online through social networking sites with little concern for who may be viewing their information. This has become an issue in current times and is up for debate based on the ethical issues associated with Social Media. 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The definition of social media obtained from the Merriam-Webster dictionary is forms of electronic communication (as Web sites for social networking and microblogging) through which users create online communities to share information, ideas, personal messages, and other content. Social media websites have actually been around for a while, the first one was created in 1997. Social networking wasn’t asRead MoreApply Decision-Making Frameworks to It-Related Ethical Issue.1134 Words   |  5 Pagescommunication is social networking. During the recent years, social networking has been the victim of ethical issues concerning vigilance and safeguard of privacy for the members and their personal data. The invasion of personal information is a c ause of distress for many individuals and organizations. Moreover, it has become an issue that requires constant effort from the concerned parties who are striving to create a safe and comfortable environment for everyone to communicate on these social sites. DuringRead MoreSocial Media On The Work Place1529 Words   |  7 PagesSOCIAL MEDIA IN THE WORK PLACE ABSTRACT: Social media is the most common technical tool which is being used by the complete society in recent days. In addition, it plays a paramount role in the business world to maintain a continuous and flexible contact with the company employees. Further, there are two types of social media sites which are enterprise social media site and the consumer social media site. Enterprise social media network is for private use and the consumer social media is availableRead MorePrivacy and Computer Technology1813 Words   |  7 Pagesso are ethical issues. Because of the widespread, computer ethics are boiling down distinguishing what is good from what is wrong mentality. Everyones view on computer ethics differ, however all should keep in mind the value of ethics when making decisions that are ethics based. The golden rules of computer ethics state that, one should do to one another what he/she thinks should be done to them and if at least quite a number of people obey the golden rule, then the re would be no many issues concerningRead MoreEthics in Technology Essay1555 Words   |  7 Pagestheir contribution to the development of computer technology would produce positive impacts on the people that would use it. During the infancy of computer technology, ethical issues concerning computer technology were almost nonexistent because computers back then were not as multifaceted as they are today. However, ethical issues relating to computer technology and cyber technology is undeniable in today’s society. Computer technology plays a crucial role in all aspects of our daily lives. DifferentRead MoreThe Facebook Profile: A Right or a Violation? Essay example1027 Words   |  5 PagesSocial networking sites such as Twitter or Facebook have created a new ethical dilemma for many businesses. Corporations, small businesses, and even universities are struggling create policies to manage their employees social networking behaviors. Social networking access, particularl y for recruiters, can provide personal information about potential employees, which would otherwise not be available. A business must follow statutes and guidelines when disclosing information to the public. Individuals

North Carolina as a colony Free Essays

North Carolina is one of the thirteen colonies established by England around 1650. The  territory was called Carolina in honor of Charles the First.  Queen Elizabeth I of England granted Sir Walter Raleigh a charter for the establishment of a  settlement in North America. We will write a custom essay sample on North Carolina as a colony or any similar topic only for you Order Now Sir Raleigh and the Queen planned to establish a colony to be able to  explore for treasures and to scout for a strategic location where they can raid loaded Spanish ships. Based on these reasons, an expedition was sent in 1584 to explore for a suitable location and also  bring samples of the nature’s bounty on the area. After the successful exploration, the group  returned to England. In 1585, the first group of colonists was organized and they arrived at the north  end of the Roanoke Island. Ralph Lane with seventy-five men was left in the island while Sir  Richard Grenville, leader of the expedition returned to England to get additional food supplies and  additional men. Friction with the natives occurred when the settlers attacked a village in response to  the stealing of a silver cup by the natives. By April 1586, relations with a neighboring tribe had  degraded to such a degree that they attacked an expedition led by Lane to explore the Roanoke River.1 There was still no sign of Grenville’s fleet and due to hardships encountered, the settlers  accepted the offer of Sir Francis Drake to return to England.  Ã‚  The second group was led by John White and they arrived in June 1587. White tried to  reestablish friendly relations with the neighboring natives. At first, the natives were hostile and  aloof. But gradually the English gained their confidence by offering glass beads and dolls as signs  of friendships (Hale 128). But the aggrieved tribes whom Ralph Lane attacked were still unfriendly  to the new colonists and shortly thereafter, one colonist was killed by these natives. Fearing for their  lives, White was elected to return to England to inform of their situation and ask for help.   Two  significant events occurred shortly after the colonists’ arrival: two â€Å"friendly† Indians were baptized  and a child was born. Virginia Dare, as the baby was named, became the first child bor n to English-  speaking parents in the new world.2 But White was delayed in coming back to the colony because  of the following reasons: the vessel was not in good condition to travel back home and in crossing  the Atlantic Ocean; the refusal of the captain to sail back to the colony during winter time and then  the war with the Spanish Armada was imminent   and all the able ships were tasked to fight. He was  able to return in the spring of 1590 and found only the remnants of what was once a settlement. There were no signs of life, only the word â€Å"CROATAN† carved on a nearby tree.3   The second  failure can be attributed by factors beyond the control of the settlers. Although Sir Raleigh was  given a charter to colonize, attention was focused on the war with Spain. Cole and Warren  concluded that, â€Å"because England was so completely involved in fighting the Spanish Armada in  1588, no supplies were sent, nor any communications maintained with the settlements†. (403) The  colonization might have been successful if the expedition was fully equipped with farm implements,  food supplies and able manpower who are trained to do hard work in cultivating the soil. They  should have establish friendly relations with the natives to preserve their lives as well as with the  natives’. The impact left by Ralph Lane and John White on the area was that they had spread Christianity and English language to the new world.   It is ironic that Stuart Monarch James I rather than the visionary Elizabeth succeeded in  finally planting the British flag on the American shores. (Garraty and Gay 663) In 1607, three  shiploads arrived at Jamestown sent out by the London Company of Virginia. Captain John Smith  imposed a semi-dictatorial attitude to his men to check their incompetence and lack of initiative. His  edict, â€Å"He who does not work shall not eat† (Cole and Warren 406) was effective that they soon  cultivated crops especially staple crops and tobacco. By 1610, more settlers arrived and by 1612,  there were exportation of tobacco to other places. Significant too were the introduction in 1619 of  representative government – important to the Englishmen who contemplated migration to the New  World – and the beginnings of Negro servitude – important despite its inhumanity, to the economic  future of North America.(Garraty and Gay 665) Reference List Cole, Fay-Cooper, and Harris Gaylord Warren. An Illustrated Outline of History of Mankind. Grolier Incorporated: New York, 1963. Garraty, John A., and Peter Gay. The Columbia History of the World. Harper and Row: New York, 1972. Hale, John R. Age of Exploration. Time-Life International: Nederland, 1974. â€Å"Historical Highlights of North Carolina †.The State Library of North Carolina. 3 April 2006. 14 Nov. 2006.http://statelibrary.dcr.state.nc.us/nc/history/history.htm â€Å"Roanoke Island†. Wikipedia: The Free Encyclopedia. 14 Nov. 2006. 15 Nov. 2006. http://en.wikipedia.org/wiki/Roanoke_Island How to cite North Carolina as a colony, Essay examples