The Physics of Roller Coasters :: Physics

A roller coaster is a thrill ride found in amusement and theme parks. Their history dates back to the 16th century. It all started in Russia, with long, steep wooden slides covered in ice. The idea then traveled to France. Since the warmer climate melted the ice, waxed slides were created instead, eventually adding wheels to the system. The first roller coaster in which the train was attached to the track was in France in 1817, the Russess a Belleville. The first attempt at a loop-the loop was also made in France in the 1850s. It was called the Centrifuge Railway. However, government officials quickly diminished the idea when the first accident occurred. Inventors since then have continued to capitalize on people’s love of a great thrill, always trying to make them bigger, faster and scarier! â€Å"Even though roller coasters propel you through the air, shoot you through tunnels, and zip you down and around many hills and loops, they are quite safe and can prove to be a great way to get scared, feel that sinking feeling in your stomach, and still come out of it wanting to do it all over again (1).† Thanks to the manipulation of gravitational and centripetal forces humans have created one of the most exhilarating attractions. Even though new roller coasters are created continuously in the hope to create breathtaking and terrifying thrills, the fundamental principles of physics remain the same. A roller coaster consists of connected cars that move on tracks due to gravity and momentum. Believe it or not, an engine is not required for most of the ride. The only power source needed is used to get to the top first hill in order to obtain a powerful launch. Physics plays a huge part in the function of roller coasters. Gravity, potential and kinetic energy, centripetal forces, conservation of energy, friction, and acceleration are some of the concepts included. â€Å"A roller coaster is essentially a gravity-powered train (2).† Gravity is the weakest of the four physical forces, but when it comes to roller coasters, it is the dominant one. It is the driving force and what accelerates the train through all the turns and twists. Gravity is what applies a constant downward force on the cars. The deceleration or acceleration mostly depends on the inclination of the angle relative to the ground. The steeper the slope is, the greater the acceleration, and vice versa.

How Far Do You Agree with the View That the Kite Runner Is a Celebration of the Bond of Brotherhooh

How far do you agree with the view that The Kite Runner is a celebration of the bond of brotherhood? Brotherhood is a strong theme throughout the book and there is evidence supporting that it is a celebration of the bond of brotherhood but also that it isn't. I think that The Kite Runner could be seen as a celebration of the bond of the brotherhood because of the relationship between Amir and Hassan. Although there are signs of disloyalty by Amir there are also signs of brotherly love between them.Amir shows that he cares for Hassan when he says ‘then he [Ali] would remind us that there was a brotherhood between people who had fed from the same breast, a kinship that not even time could break. Hassan and I fed from the same breasts. ‘ In this quote Amir implies that because he and Hassan fed from the same breast, they are like brothers. This shows that he does see a connection between he and Hassan. However, this is ironic because they are brothers in a way because they s hare the same father.When Amir says ‘But we were kids who had learned to crawl together, and no history, ethnicity, society, or religion was going to change that either. I spent most of the first twelve years of my life playing with Hassan', It shows us that Amir does love Hassan and they are close, however later on in the book he oppose this statement when he forces Hassan away. Ten years after Amir leaves Hassan he says ‘I wish Hassan had been with us today', this tells us that although he drove Hassan away, he misses him and wishes things had turn out differently.We know that Amir memories with Hassan are his happiest memories as when Baba asks Amir to think of something good, Amir has an flashback of a memory with Hassan. Hassan shows most of the signs of brotherhood through his undying loyalty towards Amir, Hassan is a loyal and caring friend to Amir. He shows this before he is raped when Assef says â€Å"But before you sacrifice yourself for him, think about this: Would he do the same for you?Have you ever wondered why he never includes you in games when he has guests? Why he only plays with you when no one else is around? I'll tell you why, Hazara. Because to him, you're nothing but an servant. ‘ We know that Amir wouldn't sacrifies for Hassan as he is a Hazara for him and his servant. This shows the reader that Amir believed it wasn't right to stay with someone of your own race and also because of Amir being of a higher social class.The ‘father-son' relationship between Amir and Baba doesn't agree with the brotherhood of celebration because at the beginning of the novel, Khaled Hosseini gives an impression to the reader that Amir is looking for the love, respect and approval of Baba he felt he has never had. Whereas Baba feels that his son is not living up to his physical, social, religious and cultural expectations and provides little time for him.However, as the novel unravels the strength of the relationship between these tw o key characters increases and Amir's is constantly eager for Baba's attention producing positive results in the relationship. With Amir feeling that â€Å"Baba hated me a little† and Baba feeling that Amir is one of those boys â€Å"who won't stand up for himself and becomes a man who can't stand up to anything†, the reader is able to understand the sketchy relationship between Amir and Baba – through the depiction of the characters and their interaction.

Do It For The Kids! - 747 Words

As the first bell rings and to hearing the morning announcements, Red Oak Elementary School will begin their day! The children walk into the classroom, such as Alayna, who continues to lick her lips as she thinks about her favorite breakfast she had this morning, banana cinnamon waffles. The students have already placed their book bags in their assigned cubbies and are ready to begin the morning workout routine. Although Georgia public school teachers are capable of making an low salary, early childhood education is an enjoyable field and young people in search of a career should consider elementary school teachers because of job benefits, and an influential role in children’s academic and social development. A job is highly enjoyable when it is benefited! Teachers continue to enjoy the benefit of touching the lives of children they serve, which has fueled the careers of generations of teachers. Therefore, teachers are rewarded benefits, such as, attractive health insurance, r etirement packages, summer vacation and working with children. For example, when my major was Early Childhood Education in the beginning years of college, I had volunteered at Red Oak Elementary. It was an exciting opportunity because it took placed at my sister’s second grade class. The teacher Ms. Walker had a positive influence towards the children, impacting their views and understandings and was able to choose the career path that benefited her to working with children (Field Work).Show MoreRelatedPersuasive Essay On Why Kids Do Drugs701 Words   |  3 PagesWhen kids get into fifth grade a D.A.R.E officer comes to teach the fifth graders about how bad drugs are to your health and how much they can ruin your life. D.A.R.E is a program for fifth graders that teaches them not to use addictive substances because of how it can ruin your life. Once a week, on Mondays, at the end of the school day our classroom has D.A.R.E. Every city that has the D.A.R.E program for their sc hools has their own D.A.R.E officer. In Kennewick we have officer Mike Myer. D.A.RRead MoreDo Adopted Kids Commit More Crimes875 Words   |  4 PagesWhy do people commit crime? The reasons vary from social and those as a result of the economic conditions that an individual is going through. Certain people also have got psychological issues that prompt them to do such things. The genetic make up of people could also make them desire to commit certain types of crimes, (Pavao, 1998). Children not well looked after in terms of parental care have a higher chance of committing a crime in their early years. In the same way children who are assaultedRead MoreWhy Do Kids Fall Sick Often? Essay1195 Words   |  5 PagesIt is hardly two weeks since your kid had a cold and now again, she is down with a stomach infection. A toddler or pre-schooler who falls sick every other week can make you feel worried and even frustrated. You are doing everything possible to keep her safe and healthy, yet she becomes vulnerable to cold, cough, fever, stomach infection and many other forms of infections and illnesses more often than what you think is normal. Take heart, dear parent. Kids fall sick and some of them more frequentlyRead MoreSmart Kids Do Stupid Things Essay1165 Words   |  5 PagesI will be the first to testify and, despite my obvious bias, I still believe that I am completely accurate when I say that my parents are the best that any kid has or will ever have. My mother, though, regardless of her efforts, repeatedly made a fatal error my upbringing; she never learned that, despite her trust in me, any adolescent boy left idle and unsupervised for any length of time will eventually turn to no good. Such was the case on a particular August afternoon. August, for any grade-schoolerRead MoreViolent Video Games Do Not Equal Violent Kids1224 Words   |  5 PagesVideo games are very misunderstood by adults. They seem to believe violent video games leads to violent kids, but that is just not true. Violent video games really don’t do any damage on the psyche of a child that was not already damaged, and if there is no damage already than no damage shall be dealt. People say violent games like Call of Duty and Grand Theft Auto have been the cause of many school shootings which is just not true. Millions of people play violent video games every day and none ofRead MoreHow Can Kids Best Be Convinced Not For Do Drugs?1115 Words   |  5 PagesAleyna Berberick Mrs.Gallos English 3H 3 November 2015 How Can Kids Best Be Convinced Not To Do Drugs? Drugs have been a rapidly growing problem for kids and teenagers over the years. Though there is no sure way to prevent the use of them, there are many precautions that can be taken to reduce, or eliminate the chances. The effects of taking drugs is far too dangerous to sit back and ignore. There are things that can be done today to prevent drug abuse among children in the future. The most commonRead MoreEssay on How to Rev Kids Up to do What You Ask876 Words   |  4 PagesHow to Rev Kids Up to do What You Ask How to rev kids up to do what you ask,† is the sample to be discussed. Discussion The author, Hoffman introduces two experts, the magazine’s parenting columnist Lynn and clinical psychologist, Phelan, to advise two families, the Ashworths, father Nigel and his three young children, Ben, one, Georgia, age three, and Liam, age five; the second family consists of Angela, a single parent and her twelve year old daughter, Nina. Parent/child interactionsRead MoreWhat Kids Should Do When Theyre Bored and Stay Active 637 Words   |  3 Pages People do all kinds of thing when they are bored. You can play basketball with your friends play 21 and beat them and Play soccer and score a couple goals on them you could even play 4 square and beat them at that. Some people even eat when your bored but that’s not good you need to stay active don’t eat when your bored. Cause you will get very unhealthy and make your heart in a bad shape you won’t be able to do fun stuff like run around with you friends or play tag with them at the park.Read MoreKids Must Do More Than Recite the Pledge of Allegiance Essay757 Words   |  4 PagesChildren i n the United States go through many years of school reciting the Pledge of Allegiance, but does it encourage loyalty in their nation or fear of it? The years that I spent in school reciting the pledge did little to instill patriotism in me. I do not even remember the words to it. Having a more hands-on approach to community involvement would be a better way to teach children pride for their country. Encourage children to be concerned about their school, neighborhood, city and nation by lettingRead MoreWhat You Can Do For Hoilson Kids After Hurricane Harvey Essay1072 Words   |  5 PagesWhat You Can Do For Houston Kids After Hurricane Harvey. When Lack of iPads Was Never A Problem. â€Å"Let me know how I can contribute best, Adeeb. I want to help rebuild the shattered schools in Houston.† And I ranted on what was bothering me – to get schools up and running for the Houston Kids after Harvey. Adeeb listened to me patiently on the phone and said something that blindsided me, â€Å"Karthik, schools will be re-built, food will be served, uniforms will happen, iPads will materialize – for