The bounce of a ball Essays

The bounce of a ball Essays The bounce of a ball Paper The bounce of a ball Paper The balls will always be dropped from the chosen heights. E. g. 1 metre, 0. 8 metres, etc. After releasing the ball we will then measure the maximum height it reaches after bouncing. The ball I will test is: Bouncy ball it will be made of rubber. The heights I will drop the ball from are: 20m 40m 60m 80m Another factor, which I will be testing, is the surface I drop the ball on to. These will be: Wooden surface Cork surface Carpeted surface The equipment we will be using is: Retort Stand and Clamp Nail Metre ruler Bouncy ball Wooden surface Vernier Calliper Electronic Weighing Scale Diagram 1: Diagram 2: Method: 1. Collect all required equipment. 2. Set up as shown above. 3. Make sure it is safely set up, and that the nail is secured in position. 4. Draw out a table to write the results in. 5. Take the bouncy ball and drop it from your first fixed height three times. 6. Record the results that you gain 7. Repeat the process for the remaining heights. 8. Record these results. 9. Change the surface. 10. Repeat experiment with same heights. 11. Record the results. 12. Change the surface again. 13. Once again repeat the experiment. 14. Record these results as well. 15. Work out the averages of all your results. Prediction: I predict that the bouncy ball will bounce furthest on the wooden surface. This is because wood is the smoothest surface out of the three, meaning that less energy will be lost as heat/friction and so more will be put in to the actual bounce of the ball. I also think that Carpet will be the worst surface of the three, as it is a very rough surface, which is likely to make the ball lose a great deal of heat/frictional energy. I think the Cork surface will come between the two, because it is rougher than wood, but smoother than carpet. Another thing that I predict is that when the Drop height is reduced, the rebound height also is reduced. Results Analysis: Using my results, I found out many things: The bouncy ball bounced most on the wooden surface. The bouncy ball bounced higher as you increased the drop height. More Gravitational Potential Energy is stored in the ball when the drop height is increased. I got these facts by looking at the line graphs shown previously. It was easy to spot which surface made the bouncy ball bounce highest. To prove that the best surface is wood I worked out the gradient of each line. Formula: Gradient = x/y Line of best fit Graph of drop height vs rebound height: Carpet Surface: As you can see from these sums, Wood has the greatest gradient, whereas carpet has the worst. The reason for wood being better as a bouncing medium is because it is much smoother than the other surfaces. Carpet is extremely rough in texture causing more friction when the ball hits it, which in turn causes more energy loss. Both of the graphs I have drawn are very similar in shape. They look absolutely identical but there are minute differences. I also noticed a relationship between the drop height and the surface used. As I increased the drop height, the ball bounced a considerable amount higher. This was the case for all surfaces. Never did the rebound height remain constant when if the drop height was changed. Conclusion: There are many reasons to why I got the results I did. There are many factors that a ball may have to influence its bounce. Some examples are: size, weight, material, etc. These characteristics as well as the bounce surface influence how well or badly a ball will bounce. The wooden surface, being the smoothest of the three, proved to make the bouncy ball bounce highest. The reason for this is because less energy is lost as heat/frictional energy. This means that there is more kinetic energy, which would mean that the ball would bounce more. The cork surface, being in between carpet and wood I terms of roughness, turned out to be second best. More energy than the wooden surface is being lost by heat/sound energy, but less is being lost than the carpet surface. The carpet surface was the worst. The ball just died out as soon it hit the carpet. This is due to its roughness and material. Carpet makes the ball lose the most heat/sound energy. The loss of more heat/sound energy would mean that there is less kinetic energy available, so the ball will not travel very far. As these were proven in my results, that would mean that my Prediction was absolutely correct. The best surface was wood, and the worst was carpet. The rebound height did decrease when the drop height decreased. Evaluation: On the whole I think that the experiment went quite well. I obtained sufficient results needed for a good experiment write up. I took three results for each drop height of each ball. By doing this, I was able to average the three and also exclude any results that did not fit in with the others. I think that my results were fairly accurate. The theories that I predicted were right. My graphs look fairly good, however there are a few anomalous points here and there. The method I did was not excellent, and most certainly did not give me the most accurate results I was capable of betting. In the time I was given, and the equipment I was restricted to, I would say that my method was fairly good. The Method was enough for the results we needed, but if I was to do more research and was to get more accurate results, then it could be improved hugely. The experiment had far too much space for human errors. For example, the wooden surface we used was just our workbench. Due to this there were dents and scratches in the table. Also, we had to make an accurate guess to where the rebound height was by placing our heads in level with the maximum place the ball bounced up to. After looking at the graphs with best-fit lines, there were only a few odd results. This is expected due to the conditions we were in. As the drop height increased the rebound height increased. There were some factors, which we did not take into account, which could have affected the experiment slightly: There could have been a some wind which affected the bounce of the ball The temperature could have increased or decreased from room temperature in which case the bounce of the ball would have been affected. The ball could have hit a dent in the workbench in which case the bounce of the ball would have been affected. The ball could have not been measured properly. I dont think that I had enough evidence to draw a suitable conclusion, as there is always space for improvement. The results I took could not be necessarily that accurate. I could have performed more than three trials on each surface, in which case my average would have become very accurate. If I had better equipment, then my results would be extremely accurate, and the graphs would give would show an extremely positive correlation. If I was given the chance to do this experiment again, I would want to use more high-tech equipment, to get more accurate results. If I could repeat it again, I would want to time the drop, so that I could calculate the velocity (velocity (m/s) = distance(m) / time (sec)) Doing this would have given me the chance to calculate the loss in Kinetic Energy. Another factor I would like to investigate if I could do this experiment again is to see how the bounce between different balls differs. I could take three different balls for example and bounce them on different surfaces, which would give me a good set of results. I think I have overall found out the main factors that affect the bounce of a ball considering the situation that I was in. Rahul Krishnan 11T Physics Coursework MR Inger 26/09/01 ScD4 Show preview only The above preview is unformatted text This student written piece of work is one of many that can be found in our GCSE Electricity and Magnetism section.

Individual Critique Literature review Example | Topics and Well Written Essays - 1000 words

Individual Critique - Literature review Example 2.0- SYNOPSIS FROM THE ARTCILE The article pointed to the importance of following factors behind the economies resisting growth: The recovery from recession receive great impact from the social factors Exports of a country has a great role to play in the recovery specifically in the net exports Role of debts and foreign direct investment is also critical. Impact of united currency in the overall recovery of countries (Walker, 2013). 3.0- ACADEMIC ALLIGMENT The article asserting the agreed upon definition of recession that paved way for the economy resisting to recovery. Among large number of factors with economic and financial strategies that play role in the economic recovery, the article highlights the dominant impact of social factor. The importance of the social factor is insisted with fact that despite the high public debt levels of Germany beyond the agreed 3% of GDP (BBC, 2012); the market considers Germany as safe heaven for investment while considering Spain and Italy in tro uble. Exploration of working conditions behind provided evidence that Spain, Italy and France had heightened the private debt (as shown in figure below) during economic growth boom to increase investments and resultantly raised the wages. (BBC, 2012) In the similar duration Germany has maintained the wages level and has developed greater export base. Hence, despite being hit by recession Germany has a positive outlook while consumers in mentioned countries are concerned with paying up debts and increased competitive wage rate has low spending sentiment thereby resisting recovery with social factors (Economou at el., 2012). Moreover, the increased resistance of French economy to recover can also be traced to have a greater contribution from similar factors as given below: (BBC, 2012) Hence unlike the dominant economic notion of high negative impact, public debt only on economic recovery is contrasted with current situation. Moreover, the increased pressure of controlling the public d ebt is also countered with continuing positive outlook of German economy. Strategy of German economy is to increase export with control wage rate developed trade surplus and hence the economy is in better position to attract foreign direct investment while the economies in trouble, in contrast, are facing trouble of huge trade deficit with piled up imports as referred below: (BBC, 2012) The current conditions of France to revisit its growth estimates along with relaxing labor laws also assert the realization of over burdened economy. While deteriorating condition points to the piling up of all factors of trade deficit, extensive government borrowing along with private borrowing as well as the labor law problems. Hence, assessment highlights reasons for controlling the debt in all in a broader context of all mentioned factors; unlike traditional theories that posed all pressure on public spending only. However, this does not refer any relaxation for public debt going beyond the set l imits and due importance of controlled public debt still retains the elementary position in economic betterment. The other highlighted factor that is making exports expensive and costing the economic recovery of countries in trouble is the increased attention to strengthen the united currency. In contrary to foundation stones for Euro that promised growth in jobs and exports, the strengthening Euro has started

Teaching Personal Statement Example | Topics and Well Written Essays - 250 words

Teaching - Personal Statement Example This cooperation occurs between students and their peers as well as students and teachers. Social literacy is supported for example, where there is opportunity to work in groups, discuss issues, and contribution to class works. Appeal to the interest of children: this principle supports science literacy since it is based on a curriculum that responds directly to the interest of children. This provides opportunities for knowledge construction. The tenet also allows a constructivist teacher to recognize and stimulate the interest of children. This will support science literacy when for example, the teacher observes what children do, solicit the ideas of children, and propose activities that entice children. Teaching in terms of the type of involved knowledge: this tenet defines the kinds of knowledge helpful to constructivist teachers. Physical knowledge, conventional or social knowledge, and logico-mathematical knowledge may be used among children. This supports science literacy in that varying strategies are used for different types of knowledge. For example, with conventional knowledge, children are shown and told the information via direct instruction, in physical knowledge, the children are assisted in getting chances to act on things and their reactions noted while a teacher provides experiences in logico-mathematical knowledge through which student reorganize their own knowledge. Choosing content challenging children: this principle creates a culture of inquiry and develop teaching curriculum based on ideas which allow a very in-depth study. It supports science of literacy through providing activities appropriate for wide development levels. For example, it analyzes activities in terms of relationships and regularities. Promote reasoning among children: this principle supports science literacy because it encourages

Dracula By Bram Stoker English Literature Essay

Dracula By Bram Stoker English Literature Essay Very famous for introducing Count Dracula and the novel tell the story of Count Dracula a vampire that have been seeking his dead love for hundred years but he finally found it In a young woman named Mina Murray that live in London that takes him to seek her but at the same time a group of men and the famous Van Helsing want to kill count Dracula they unleashes a battle between Dracula and Van helsing Dracula has been assigned to many literary genres including vampire literature, horror fiction, the gothic novel and invasion literature. Characters Details: Primary Characters- Count Dracula: A centuries-old vampire and Transylvanian nobleman, Count Dracula inhabits a crumbling castle in the Carpathian Mountains. He can assume the form of an animal, control the weather, and he is stronger than twenty men. His powers are limited, however for instance, he cannot enter a victims home unless invited, cannot cross water unless carried, and is rendered powerless by daylight. Abraham Van Helsing: A Dutch professor, his pupil is Dr. Seward. Called upon to cure the ailing Lucy Westenra, Van Helsings contributions are essential in the fight against Dracula. Unlike his comrades, Van Helsing is not blinded by the limitations of Western medicine: he knows that he faces a force that cannot be treated with traditional science and reason. Knowledgeable about vampire folklore, Van Helsing becomes Draculas chief antagonist and the leader of the group that hunts Dracula down and destroys him. Jonathan Harker A lawyer, whose firm sends him to Transylvania to conclude a real estate transaction with Dracula. Harker quickly finds himself a prisoner in the castle and barely escapes with his life. He demonstrates a fierce curiosity to discover the true nature of his captor and a strong will to escape. He help Van Helsing defeating Dracula Mina Murray: Jonathan Harkers fiancà ©e. Mina is a practical young beautiful woman who works as a schoolmistress. Eventually victimized by Dracula herself and the best friend of the Lucy Westenra who is the first victim of Dracula Lucy Westenra: Beautiful young woman, every man who meets her wants to marry her or save her life, or both. Lucy chooses Arthur to be his wife, but is Draculas first victim and she became in a vampire that eats the blood of the children but later she is killed by Van Helsing group in her tomb. John Seward: A talented young doctor he is Van Helsings pupil. Seward is the administrator of an insane asylum not far from Draculas English home and the first to see Lucy Westenra after she was injured by Dracula. Sewer notes are better than the other because I took the story through the eyes of Seward Arthur Holmwood: The one that Lucy choose to marry with, he is a sensitive man an is in the moment when they have to kill Lucy in her tomb he also lose his family in a short period he also finances the vampire hunt and lets everyone use his title to gain access to information about Dracula. Quincey P. Morris: Quincey is from Texas. He is an old friend of Arthur Holmwoods and John Sewards. He also wants to be helpful whenever he can. It is his seeming lack of importance that shows his personality Quincey ultimately sacrifices his life in order to rid the world of Draculas influence. Second Characters- Renfield: An inmate in Dr. Sewards insane asylum. He is seduced by Dracula, who he hails as his Master. When he is at his best, he is polite and intelligent and he tries to do the right thing. When he is at his worst, he eats insects for their souls and is completely vulnerable to Draculas will. It is he who allows the Count into Sewards home he is some kind of servant to Dracula Peter Hawkins: Jonathans boss and mentor. He is very generous and has great faith in Jonathan, both as a solicitor and as a person. Plot This story begins with the journal of a man named Jonathan Harker who has travelled to Transylvania to give some documents about the new property in London to count Dracula, when Jonathan arrives to the castle and meet count Dracula he describes Dracula like a pale thin old man and finds strange the castle of count Dracula and have bad feelings about it, then he start to feel dark presence and hearing noises , when he tried to escape from the castle Count Dracula trap him on the castle with other three women vampires, Dracula prepared a ship to go to London . Jonathan has a fiancà ©e, her name is Mina Murray who is waiting for the return of Jonathan, meanwhile she went to the wedding of her friend Lucy Westenra and Arthur Holmwood ,next in the night Mina see that Lucy was in the courtyard and she was attacked by a dark form of monster but when she went to help Lucy she only find her injured and nothing more, then her husband Arthur called the doctor John Seward who Is the one that g ive the treatment to Lucy that consist of giving her a lot of blood transfusions but is seems to have any good results so Seward decides to call his mentor Van Helsing who come from Amsterdam, when he arrives he checked Lucy and he tell them that Lucy cannot be saved them she die. Jonathan has escaped an returned to London thinking about nothing happened in that castle was real when suddenly his boss Peter Hawkins died and leave a great fortune to Jonathan , then he marries Mina. One day Jonathan see Dracula but he cant remember because Dracula has recovered his youth because the blood of his victims then Jonathan went unconscious and that allow mina to read his journal and know what happenen in the castle. Soon there is a rumor of a monster in London that sucks blood from people ,that take Van Helsing to gather Mina, Jonathan, Arthur, Quincey, Seward and to seek Lucys tomb and watch how Lucy wake up in vampire form and they killed her by cutting off her head , Van helsing prepare Mina, Jonathan, Arthur, Quincey and Seward to kill Dracula, but in the search Van helsing realized that Mina was on danger so Helsing and sewer went into Minas room and found Jonathan unconscious and mina in the arms of Dracula drinking blood from him, next Dracula disappear. When th ey think that all is lost Van Helsing tell them that if they kill Dracula after the next day Mina would return back to normal then they use Mina to led them to Draculas place and when they arrive to Transylvania they found the box that have the body of the count but it was protected by some gypsies but they won the battle an kill count Dracula and that make Mina back to normal but Sewer got bad injured and sadly he die, but at least Mina and Jonathan live happily thats the end of the novel Personal Evaluation and conclusion- Book strengths: in this book is written like in journals and letters , and give the point of view of almost all the characters that helps to get in their thoughts and to near feel as they feel in the novel, I liked that so much because this novel dont have only one narration Book Weakness: It can be very heavy for some people because it is divided in journals and different points of view so it can be hard for some people to relate and to follow the story but it has its benefits Sources: Dracula by Bram stoker book in Pdf Wikipedia- http://en.wikipedia.org/wiki/Dracula Horror novels review- http://usersites.horrorfind.com/home/horror/dracula/bookreviews/bramstokersdracula.html Dracula Characters- http://www.bookrags.com/notes/dra/CHR.html

Lady Macbeth as the True Villain with Teacher Commentary :: essays research papers

At the end of the play Macbeth is a broken man†. Do you agree? How does the downfall of Macbeth maintain audience interest and how is the ending essential to the tragedy of Macbeth? At the end of the play Macbeth is a broken man because throughout the play he has continued to dig a hole of pity and self remorse, and his conscience comes to a point where there is no turning back. [[well put – in a sense you are defining â€Å"broken man† here]]After this comprehension, Macbeth breaks down and becomes a confused, irate, irrational man. The audience maintains interest in Macbeth, because through the evil a sense of innate nobility and loyalty still exists for the audience to feel a sense of waste and lost potential. [excellent idea]]This connection is what keeps the audience engrossed in the play until the finish. Macbeth is like every other human being. He has the potential to do evil. He has a tragic flaw, or an Achilles Heel. [[ although I agree with you it’s worth keeping in mind the fact that many other people might not like to think of themselves like this – you may need to argue a little more to explain how we are all caught up in this web of evil]]Macbeth’s is Ambition and Greed. Anyone that spurs his intent and ambition will create a chain of deadly consequences. In this case, the witches triggered the evil and hatred that exists within. â€Å"All hail Macbeth, Thane of Glamis† â€Å"All hail Macbeth, Thane of Cawdor† â€Å"All hail Macbeth, King of Scotland† Evil is a drug that has poisoned Macbeth. Although Macbeth knows what the consequences of evil actions are, he carries out the murder of Duncan. But, what I have come to realise is that Macbeth did not have a choice. The witches told him of the future, so Macbeth understood the outcome and knew that his evil was an inevitable force that would throw him into a realm of a good or evil. [[THIS IS A REALLY INTERESTING IDEA – you could develop it further, perhaps also consider that the he really understand that the realm he will be thrown into is MUCH MORE evil than good]] So we have to ask, does Macbeth really have an evil conscience? Did he do his actions by choice or by a commandment of what the supernatural have told him to do? [[this is a wonderful line of argument - try to build on it]]

Are Education Systems Modern as Well as Practical Essay

A willing and able person who cannot find a job is given the title of unemployed. /When person who is willing to do work and also has the ability to do so cannot find a job, they are given the title of unemployed. Willingness to work can come about for a number of reasons such as the desire to escape from poverty or attain a higher standard of living. The problem comes in with the ability of that individual to earn a stipend. With the annual population growth being 1.8% during the last four years, nearly a million workers are being added to the workforce every year. However despite such vast potential at hand, the employment rates are creating an unfavorable environment. Nearly 60% of the population is in the ‘economically productive’ age group and with the alarming fact that the rate of youth unemployment in Pakistan is 8%, higher than the overall unemployment rate of 6% this year. Almost half of the Pakistani workforce is unemployed according to the figures released by the Pakistan Economy Watch. The low growth in labour productivity has not matched the rising labour force and due to the low literacy rate coupled with ongoing economic depression, poverty is constantly growing. Since the scientific revolution and the times of the Age of Enlightenment, our knowledge and the way we are educated has progressed through the advancing scientific methods. In our modern times, colleges give us the option of studying, for example, applied science or theoretical science. Our primary education sector /According to data from the International Labour Organization, the /Our primary and secondary education are to an extent meeting modern standards of education but the problem lies with the Tertiary sector. Unemployment and poverty have affected not only our country but the world. The foundation of the eurozone crisis lies with the 11.8% unemployment rate, up from .1% in only a month. Close to 19million in the 17-nation zone have been affected. The risk of poverty is constantly growing, and has become a global issue. Thoughtfully executed management of (social norms and expectations ) our agricultural sector can prevent the takeover of foreign companies along with the loss of jobs due to mechanization. The modern education as it is seen today consists of learning through the mediums of technology, that being the computer,projectors and the internet. The way I see it, the cramming of facts and dates and rote learning does not benefit our society, instead a practical aspect of learning needs to be taught by the government and private institutions. According to various records, with 50% of our population being women, the number of girl enrolling in middle school is alarming. Science has always fascinated children, but with time the motivation dies down. Reading a textbook surely giving us the knowledge but in the end we learn, give exams and forget. A practical demonstration on the other hand would enable the child to grab the idea better, en-rooting the knowledge permanently in their minds. The government has to not only focus on successfully executing growth-oriented policies but manage our agricultural sector.

Comparison Of Calista Roy s And Betty Neuman - 980 Words

Throughout nursing, there are many theories that nurses may come across and use. Calista Roy’s and Betty Neuman are two theorists that use two different types of models to encompasses the health, person, and the environment. Callista Roy uses a theory that promotes adaptation to the stimuli a person may encounter. Betty Neuman uses a theory that promotes equilibrium in a time where a person will encounter stress. These theories allow the nurse to bring a knowledge to learn more about the person and the factors that influence their health. Although with any theory there are different approaches in how the nursing plan is done, but with the patient in mind, it makes the difference in care that is given and allows for better outcomes for the patient. Roy’s adaptation model is described as promoting a person’s adaptation in the four adaptive models which include physiologic needs, self-concept, role function, and interdependent relations (Hood, 2014, p. 135). Roy uses the approach of adaptation in the response to external stimulus. A stimulus can elicit a response, but it is the way that a person can adapt to the stimulus that will allow the person to cope (Roy, 2014, p.135). For example, a person may encounter an illness but how the person deals with it and the resources at hand will make the difference in their coping. Roy describes that there are two coping mechanisms that can affect our mind and also our body systems (Hood, 2014, p.134). Betty Neuman’s system model usesShow MoreRelatedHistorical Development of Nursing Timeline1657 Words   |  7 PagesTheory emphasizes the importance of addressing the patients’ needs. She developed 14 components as a guide to address a patient’s self-care need to help the patient become as independent as possible† (â€Å"Virginia Henderson – Nursing Theorist†, 2013). 1960’s Theories Faye Abdella (1960). Developed the 21 nursing problems. Abdella wanted to focus on the patient rather than the treatment of the disease (â€Å"Faye Abdella - Nursing Theorist†, 2013). Ida Jean Orlando (1961). Orlando developed the nursing process