Thursday, January 23, 2020
Free Essays on Terrorism: A Message to the Terrorists :: September 11 Terrorism Essays
A Message to the Terrorists "You monster. You beast. You unspeakable bastard. "What lesson did you hope to teach us by your coward's attack on our World Trade Center, our Pentagon, us? What was it you hoped we would learn? Whatever it was, please know that you failed. "Did you want us to respect your cause? You just damned your cause. "Did you want to make us fear? You just steeled our resolve. "Did you want to tear us apart? You just brought us together. "Let me tell you about my people. We are a vast and quarrelsome family, a family rent by racial, social, political and class division, but a family nonetheless. We're frivolous, yes, capable of expending tremendous emotional energy on pop cultural minutiae -- a singer's revealing dress, a ball team's misfortune, a cartoon mouse. We're wealthy, too, spoiled by the ready availability of trinkets and material goods, and maybe because of that, we walk through life with a certain sense of blithe entitlement. We are fundamentally decent, though -- peace-loving and compassionate. We struggle to know the right thing and to do it. And we are, the overwhelming majority of us, people of faith, believers in a just and loving God. "Some people -- you, perhaps -- think that any or all of this makes us weak. You're mistaken. We are not weak. Indeed, we are strong in ways that cannot be measured by arsenals. "Yes, we're in pain now. We are in mourning and we are in shock. We're still grappling with the unreality of the awful thing you did, still working to make ourselves understand that this isn't a special effect from some Hollywood blockbuster, isn't the plot development from a Tom Clancy novel. Both in terms of the awful scope of their ambition and the probable final death toll, your attacks are likely to go down as the worst acts of terrorism in the history of the United States and, probably, the history of the world. You've bloodied us as we have never been bloodied before. "But there's a gulf of difference between making us bloody and making us fall. This is the lesson Japan was taught to its bitter sorrow the last time anyone hit us this hard, the last time anyone brought us such abrupt and monumental pain.
Wednesday, January 15, 2020
Crowded Coasts Essay
Using named examples, describe how physical and economic factors have lead to crowded coasts? The area around the coast may have a better climate than inland for jobs. For example, in Australia, rainfall is much greater nearer the coast and so most of the farmland is within 300-400km of the coastline. The ability to earn a living through farming means more people would move to the coast as it will create a higher crop yield and ultimately and greater profit. Recent droughts in inland Australia makes the coast the best place to farm. The coast may also have valuable resources that would bring people because of job opportunities or goods. The sea can give food from the fish and promote fishermen, the sand could be used to create glass and there might be some valuable resources such as coal, oil or natural gas which could attract people as there would need to be multiple workers. So, the more resources are found on the coast, the more jobs are needed to fill them and so people who may b e in unemployment inland will see this and move to the coast. The climate on the coast also lead to crowded coasts as the climate is usually ââ¬Ëbetterââ¬â¢ than inland or in other areas. An example is Costa Rica in Spain where people move due to the Mediterranean and which is also a factor in why many ex-pats live in the South of Spain to get away from the British weather. The climate might be cooler and so more comfortable living and working conditions such as Australia or the moderate temperatures all year around (Dorset is the 2nd sunniest and have very few days of snow and frost). The environment would also appeal to people who have been living in densely populated cities as there is a high density of ecosystems and so this would appeal to not just the people living there but provides income through tourism and so more people would go to the coast for jobs. Jobs could include working at hotels on the coast or through giving diving tours of coral reefs. Eventually, more people would move to the coast for these jobs making it more crowded but also from the tourists who visit the area. The transport links in the coastal areas means people have the ability to live on the coast but also can commute to a city if needed. The transport links would encourage urban growth as a main port on the coast would bring employment. The extra transport also means tourism can thrive as people can get on a train/airplane and get to the destination quickly. An example is Bournemouth which is a large tourist area and has a station located not too far from the coast but also a small airport for local flights so people around the country can go to Bournemouth as a tourist. The cost of living could also be cheaper if you are living in smaller coastal towns and so could be appealing for young families who are short of income. This is the case for Spainââ¬â¢s Costa geriatric and Australia. However, once more people move in the house prices will increase but if itââ¬â¢s only a small town then more people will become interested but the house prices will start relatively low.
Monday, January 6, 2020
Battle of Fort Washington in the American Revolution
The Battle of Fort Washington was fought on November 16, 1776, during the American Revolution (1775-1783). Having defeated the British at the Siege of Boston in March 1776, General George Washington moved his army south to New York City. Laying out defenses for the city in conjunction with Brigadier General Nathanael Greene and Colonel Henry Knox, he selected a site on the north end of Manhattan for a fort. Located near the highest point on the island, work began on Fort Washington under the guidance of Colonel Rufus Putnam. Constructed of earth, the fort lacked a surrounding ditch as American forces did not have sufficient powder for blasting out the rocky soil around the site. A five-sided structure with bastions, Fort Washington, along with Fort Lee on the opposite bank of the Hudson, was intended to command the river and prevent British warships from moving north. To further defend the fort, three lines of defenses were laid out to the south. While the first two were completed, construction on the third lagged. Supporting works and batteries were constructed on Jeffreys Hook, Laurel Hill, and on a hill overlooking Spuyten Duyvil Creek to the north. Work continued as Washingtons army was defeated at the Battle of Long Island in late August. American Commanders Colonel Robert Magaw3,000 men British Commanders General William HoweGeneral Wilhelm von Kynphausen8,000 men To Hold or Retreat Landing on Manhattan in September, British forces compelled Washington to abandon New York City and retreat north. Occupying a strong position, he won a victory at Harlem Heights on September 16. Unwilling to directly attack the American lines, General William Howe elected to move his army north to Throgs Neck and then on to Pells Point. With the British in his rear, Washington crossed over from Manhattan with the bulk of his army lest it be trapped on the island. Clashing with Howe at White Plains on October 28, he was again forced to fall back. Halting at Dobbs Ferry, Washington elected to split his army with Major General Charles Lee remaining on the east bank of the Hudson and Major General William Heath directed to take men to the Hudson Highlands. Washington then moved with 2,000 men to Fort Lee. Due to its isolated position in Manhattan, he wished to evacuate Colonel Robert Magaws 3,000-man garrison at Fort Washington but was convinced to retain the fort by Greene and Putnam. Returning to Manhattan, Howe began making plans to assault the fort. On November 15, he dispatched Lieutenant Colonel James Patterson with a message demanding Magaws surrender. The British Plan To take the fort, Howe intended to strike from three directions while feinting from a fourth. While General Wilhelm von Kynphausens Hessians were to attack from the north, Lord Hugh Percy was to advance from the south with a mixed force of British and Hessian troops. These movements would be supported by Major General Lord Charles Cornwallis and Brigadier General Edward Mathew attacking across the Harlem River from the northeast. The feint would come from the east, where the 42nd Regiment of Foot (Highlanders) would cross the Harlem River behind the American lines. The Attack Begins Pushing forward on November 16, Knyphausens men were ferried across during the night. Their advance had to be stopped as Mathews men were delayed due to the tide. Opening fire on the American lines with artillery, the Hessians were supported by the frigate HMS Pearl (32 guns) which worked to silence the American guns. To the south, Percys artillery also joined the fray. Around noon, the Hessian advanced resumed as Mathew and Cornwallis men landed to the east under heavy fire. While the British secured a foothold on Laurel Hill, Colonel Johann Ralls Hessians took the hill by Spuyten Duyvil Creek. Having gained a position on Manhattan, the Hessians pushed south towards Fort Washington. Their advance was soon halted by heavy fire from Lieutenant Colonel Moses Rawlings Maryland and Virginia Rifle Regiment. To the south, Percy approached the first American line which was held by Lieutenant Colonel Lambert Cadwaladers men. Halting, he awaited a sign that the 42nd had landed before pushing forward. As the 42nd came ashore, Cadwalader began sending men to oppose it. Hearing the musket fire, Percy attacked and soon began to overwhelm the defenders. The American Collapse Having crossed to view the fighting, Washington, Greene, and Brigadier General Hugh Mercer elected to return to Fort Lee. Under pressure on two fronts, Cadwaladers men soon were forced to abandon the second line of defenses and began retreating to Fort Washington. To the north, Rawlings men were gradually pushed back by the Hessians before being overrun after hand-to-hand fighting. With the situation rapidly deteriorating, Washington dispatched Captain John Gooch with a message requesting Magaw to hold out until nightfall. He hoped that the garrison could be evacuated after dark. As Howes forces tightened the noose around Fort Washington, Knyphausen had Rall demand Magaws surrender. Sending an officer to treat with Cadwalader, Rall gave Magaw thirty minutes to surrender the fort. While Magaw discussed the situation with his officers, Gooch arrived with Washingtons message. Though Magaw attempted to stall, he was forced to capitulate and the American flag was lowered at 4:00 PM. Unwilling to be taken a prisoner, Gooch jumped over the forts wall and tumbled down to the shore. He was able to locate a boat and escaped to Fort Lee. The Aftermath In taking Fort Washington, Howe suffered 84 killed and 374 wounded. American losses numbered 59 killed, 96 wounded, and 2,838 captured. Of those soldiers taken prisoner, only around 800 survived their captivity to be exchanged the following year. Three days after the fall of Fort Washington, American troops were forced to abandon Fort Lee. Retreating across New Jersey, the remains of Washingtons army finally halted after crossing the Delaware River. Regrouping, he attacked across the river on December 26 and defeated Rall at Trenton. This victory was followed up on January 3, 1777, when American troops won the Battle of Princeton.
Sunday, December 29, 2019
Communism And The Cold War Essay - 1127 Words
Throughout United States history, there has not been a more prominent and long lasting threat like the one of communism. It has been a threat to the democratic and capitalist ideals of the U.S. since before World War I, throughout the Cold War and is still until this day. When one thinks about communism, you conjure up images of the Red Scare that the Soviet Union induced and of other dictatorships throughout the western hemisphere and one might overlook the Marxist ideals that were being spread throughout our neighboring countries. These western countries were allies that the U.S. could not afford to lose during the Cold War. Latin America, which has many ties to the U.S., both geographically and politically, could pose a very strategic threat to the U.S. in its battle against communism. To understand Latin Americaââ¬â¢s communist history is to understand how much influence and intervention the U.S. had in the region during the Cold War. This report will serve to explain how comm unism spread to the western hemisphere, why the U.S. government had to stop that spread, and how they were able to stop many communist revolutions in Latin America. Before we explore the many U.S. interventions in Latin America, it is vital to understand why anti-imperialism was such a strong political force in the region. Everything started post WWII. As we all know, Latin American countries were one of the biggest allies and contributors to the U.S. during the war, lending them everything fromShow MoreRelatedThe Cold War Between Communism And Communism1721 Words à |à 7 PagesThe Cold War The conflict in ideologies between capitalism and communism resulted in one of the greatest conflicts of the twentieth century. The belief that freedom and democracy would die under communist rule caused the United States to start a conflict that would last for decades. The decisions made by the United States in W.W.II caused tensions to rise between the U. 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This ideology is the source of many revolutions and conflicts throughout the history likes the English Civil War, the Bolshevik Revolution, the Vietnam War, the Korea War and the Cold War. However, what makes Communism different from other ideologies is its origin, its policy, and its effects on the poor and the working class. CommunismRead MoreCold War: Capatalism v. Communism873 Words à |à 4 Pagesââ¬Å"Capitalism v. Communismâ⬠During the Cold War, Europe was split between communist countries and non-communist countries. The strife was caused by the differences in the underlying values in capitalism and communism. During this time, the United States and the Soviet Union also had opposing ideologies. Despite the differing ideologies of capitalism and communism, both have affected the political, cultural, and economic development of Third World countries. 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Saturday, December 21, 2019
Design Proposals That Architects Have Proposed Solve...
A scientific explanation of a parasite is an organism that lives on or in an organism of another species, known as the host, from the body of which it obtains nutriment. Similar to the insects, Parasitic Architecture can be defined as an adaptable, transient and exploitive form of architecture that forces relationships with host buildings in order to complete themselves. This form of architecture can be considered as an architectural intervention that transforms existing structures. This results in parasitic architecture providing a new perspective or definition to the public and potentially offers a new space. The parasite brings society and urban structures closer. The architecture has become an expression of a social demand orâ⬠¦show more contentâ⬠¦Only later did parasites get their negative image of spongers. This negative association is still recognizable in the biological definition of parasitism as a symbiosis or coexistence in which the parasite has an advantage at the expense of its hostâ⬠¦ The parasite is selfish since it does not return its hostââ¬â¢s favor; it is parasitic for its own well being and gives its species an advantage in the long run. Parasitic architecture can be employed as a mediator between the changes in society on the one side and the urban systems on the other. The parasite is informal compared to its host. Therefore, the parasite can be used to stimulate and accommodate spontaneous processes and informal initiatives. This is achieved because the parasite provokes, explores and breaks open both physical and mental boundaries in order to offer opportunities for the elusive and new propositions. In this way, parasitic architecture can start a process of changes. In regards to homelessness, parasitic architecture could possibly be the new means of providing shelter for the homeless. New proposals set out by several architects show ways in which the homeless are being protected from the cold streets that they usually call ââ¬Ëhomeââ¬â¢. Homelessness is a growing problem across the city of London, according to government statistics. In London, 742 rough sleepers were counted, accounting for 27% of the national figure. You usually spot a homeless person on the stairs and
Friday, December 13, 2019
Ethical Dilemna â⬠Law Enforcement Free Essays
Incident Review 1. What is the ethical issue or problem? Identify the issue succinctly. The ethical issue would be rather to arrest the man for domestic violence or driving while intoxicated due to the test that the officers performed and what they observed. We will write a custom essay sample on Ethical Dilemna ââ¬â Law Enforcement or any similar topic only for you Order Now 2. What are the most important facts? Which facts have the most bearing on the ethical decision presented? Include any important potential economic, social, or political pressures, and exclude inconsequential facts. The most important facts is that the car was still warm and they observed the man drop something out of his pockets that looked like keys. The wife stated that she had not driven the vehicle all day and the man stated that he had not driven the car since he arrived 4 hours ago. The officer performed a sobriety test and a preliminary alcohol screening test which revealed that the manââ¬â¢s blood alcohol was twice the legal limit. There was also a domestic violence call which is the reason the officer responded to the house. 3. Identify each claimant (key actor) who has an interest in the outcome of this ethical issue. From the perspective of the moral agentââ¬âthe individual contemplating an ethical course of actionââ¬âwhat obligation is owed to the claimant? Why? Claimant (key actor) Obligation (owed to the claimant) Perspective (What does the claimant hope will happen?) Husband Fidelity, beneficence The husband is trying to avoid being arrested and wishes to be left alone by the officers. Wife Beneficence, non-injury The wife does not want to her husband to be arrested and does not want the help of the two officers Officer Nixon and Officer Nook Justice The officers are there to seek the truth and justice of the crimes that have been committed. Even though the case may be thrown out of court the officers do have the warmth of the car as evidence to present to the court. Society Justice Society wants to make sure that the wife gets help against her husband for domestic violence. Society also wants to make sure that the streets are safe and if the husband is behind the wheel at the double the legal limit of alcohol then he is putting himself and society in harm. Evaluating Alternatives 4. What are two alternatives for the scenario? One alternative can be a wild card that you ordinarily may not consider an option because of potential implications. Both should be within free will and control of the same moral agent. Alternative A Alternative B 5. Respond to the following questions based on your developed alternatives. Alternative A Alternative B What are the best- and worst-case scenarios if you choose this alternative? Will anyone be harmed if this alternative is chosen? If so, how will they be harmed? Consider families and derivative effects. Would honoring an idea or valueââ¬âsuch as personal, professional, or religiousââ¬âmake the alternative invalid? Are there any rules, laws, or principles that support the alternative? Are there rules, laws, or principles that make the alternative invalid? State the rule or principle and indicate if it invalidates or supports the alternative. Applying Ethical Guidelines 6. Consider each ethical guideline and explain whether it would support or reject your alternative. Guidelines based on the action itself Alternative A Alternative B Should this alternative become a rule or policy that everyone in this situation should follow in similar situations in the future? (Kant) Does this alternative result in using any person as a means to an end without consideration for his or her basic integrity? (Kant) Is the intent of this action free from vested interest or ulterior motive? (Kantââ¬â¢s good will) Does this alternative demonstrate a genuine concern for others affected by the decision, and is the moral agency responding to a perceived need? Guidelines based on consequences Alternative A Alternative B Is the good that results from this alternative outweighed by the potential harm that might be done to others? (Millââ¬â¢s harm principle) Is any harm brought about by anyone other than the moral agent? (causal harm) Will anyone be harmed who can be said to be defenseless? (paternalism) To what degree is this alternative based on the moral agentââ¬â¢s own best interest? (ethical egoism) Which alternative will generate the greatest benefitââ¬âor the least amount of harmââ¬âfor the greatest number of people? Select only one alternative. (utilitarianism) Ethical Decision Making 7. Choose to proceed with either Alternative A or Alternative B and explain the reasons for your decision. How to cite Ethical Dilemna ââ¬â Law Enforcement, Essays
Thursday, December 5, 2019
Determination of Gravitational Acceleration
Question: Discuss about theDetermination of Gravitational Acceleration. Answer: Introduction Historical and Theoretical Basis behind the Determination of Gravitational Acceleration Aristotle, the great Greek philosopher, believed that every motion or effect has a cause. The downward movement of heavy earthly elements is related to their nature which makes them to move downwards towards the center of the earth. Similarly, light objects are caused by their nature to move upwards to the inner spheres of the moon. In other words, Aristotle believed that heavy objects do not move towards center of the earth because of external force of gravity but rather because of their heaviness. However, Brahmagupta (an Indian mathematician and astronomer) held that because of the spherical shape of the earth, it attracts objects towards its center. Disputing Aristotle, Galileo discovered that all objects accelerate equally when falling. His findings were based on the assumption that if air resistance is negligible, all objects are assumed to fall at the same acceleration (Garg Kalimullah, Arun Lima, 2007). In the same century, Robert Hooke suggested that there is a force of gra vity that inversely varies with the square of their distances. Later, Kepler came up with three laws that govern the orbital movement of planets. His first law states that all planets move in an ellipse with the sun at one focal point, balanced from the center. Secondly, objects near the sun move faster than those farther away. And lastly, the planets distance from the sun determines the time it takes to revolve around the sun. Based on Keplers laws on the motion of planets, Isaac Newton sought to investigate the motion of all objects. He discovered that all falling objects follow the same principles as outlined in Keplers Laws. Apart from the laws of motion, Newton also suggested that all matter exerts a force called gravity that pulls matter towards its center and this force is dependent on the mass of the object and also wanes with distance. For instance, the Sun has higher gravity than the earth and the earth has more gravity than an apple. Newtons Law of gravity explains the earths movement around the sun. Ideally, the earth would move straight throughout the universe. However, this is not the case because the sun exerts its pull on the earth that forces the planet to move in elliptical orbit. Newtons theory on gravity has made it possible to explain the rise and fall of the ocean waters that occurs because earths gravitational pull on the moon. The force of gravity is responsible for the shape and structure of the earth. It is one of the fundamental parameters in physics that governs the motion of objects on the surface of the earth. In simple terms, earths gravity can be defined as the force with which the earth attracts objects towards its centers. It is also the rate at which a falling object increases in speed as it falls. A free falling object is able to move with a specific value of acceleration, known as gravitational acceleration and is denoted by letter g. Theoretically, this value was determined by Newton to be 9.8m/s. There are several ways that has been used by physicists to measure the acceleration due to gravity. Some of these ways have produce errors that compromise the final results. Recently, there have been new developments on the instruments used for measuring gravitational acceleration. The objective of these new developments is to reduce the errors that are common with scientific experiments (Cook 1957, pp. 34). According to Newtons principle, gravitational acceleration can be determined by computing the time t for a falling object through a given vertical distance by using the formula Y= ut +1/2gt2. .... .. . .. . . . .. . .. . .1 Where u= initial velocity of the object at the start of timing. If the objects falls from a stationary point then u=o and the equation reduces to y =1/2gt2 . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . 2 In such experiments that involve free fall objects, determining the accurate time for the flight is a major challenge since there is no precise means of measuring the start time as one hold a stop watch on one hand and watching the falling object. As a result, the scale and clock does not provide the precision required in this experiments. Application of electronic devices seems to have solved the problem of timing. With electronic timer, the correct start and stop times can be obtained thus increasing accuracy and precision. In simple terms, Newtons law on force stipulates that force on an object depends on its mass and acceleration. In other words, force is a product of mass and acceleration (F = ma). Thus, for an object to experience acceleration, a force has to be applied to it. This is what Newtons Universal law of gravity states. The general formula as set by Isaac Newton for determining the force between two objects is given by F = GM1M2/ r2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Where G= gravitational constant M1 and M2 are the masses of the two objects, r = the distance between the two objects. In other words, force between two objects is obtained by multiplying the product of their masses with a constant, G and dividing by the square of the distance between them. When an object is near the earths surface, then the distance is presumed to be the radius of the earth. As a result, the above equation reduces to F = GmMe/re2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 In this case, the force depends purely on the mass of the object, since mass and radius of the earth are constant and it corresponds to the weight of the object on the earths surface. Therefore, Ma= GmMe/re2=mg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Rearranging eq. 5 g= GMe/re2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 From equation 6, it is evident that gravitational acceleration is a constant since it depends on constant values. This equation was first determined by Galileo upon dropping cannonballs of different masses and realizing that they landed at the same time. His explanation was based on the fact that they experienced the same acceleration (acceleration due to gravity). Similarly, when a coin and a feather are both dropped simultaneously in a vacuum where there is no air resistance they land together. Overall, determining acceleration due to gravity we measure the time of travel from a stationary point and the distance travelled as shown in equation 2. Second Section Objective: To determine acceleration due to gravity using three different methods; ticker tape timing, stroboscopic analysis, and electronic timing. First Method: Ticker Tape Timing In this experiment, a length of ticker-tape is threaded in a ticker timer and attached to a trolley at one end. The trolley is pulled by a constant force along the bench. The elastic cord is looped on one end around a rod which is attached to the trolley. To keep the force constant, the cord is stretched by the same amount of force with which the trolley is pulled. The experiment is repeated several to improve on precision. This method is limited in accuracy because of friction of the tape as it passes through the ticker timer which reduces the rate of acceleration. This can be reduced by using larger mass but it also needs investigation. Results The experiment was done three times per student in the group. The timer runs at 50 dots per second. Thus, the period was 0.02s. Tape Number Initial position Final position Results (m/s2) 1 0.015 0.066 7.1875 2 0.0145 0.068 7.4306 3 0.02 0.082 7.75 Second method: Stroboscopic Analysis A camera was set up on a tripod directly in front of the stand with the electromagnet at the top of the frame. The position of the camera was adjusted appropriately so that at least one meter of fall was photographed. The strobe light was positioned so that the falling object would be illuminated from the side. With the apparatus fully set the flash rate of the strobe was adjusted to 25 flashes per second. After connecting the electromagnet to a power supply, the voltage was adjusted to hold the ball bearing. With the room lights off, the Camera aperture was opened wide to give a sharp view through viewfinder As the strobe light flashes, the cable release is depressed to open the shutter, the ball bearing was released by switching off the power supply. The shutter is then closed when the ball bearing finishes the fall. Results Trial C(m/s2) g(m/s2) 1 4.798 9.596 2 4.899 9.798 3 4.903 9.806 4 4.910 9.820 Third method: Electronic Timing The stand was set with electromagnet and then connected to power supply The voltage of the power supply was adjusted so that it held the steel strip vertically. At the base of the strip, the light beam was mounted just below where it could interrupt the beam (the adjustment is done cautiously so as not to interfere with initial velocity) The timer was reset to zero and the steel strip released by switching off the power supply to the electromagnet and timing recorded The experiment was repeated 4 times and each time results recorded The length of the strip was measured with much focus on accuracy Distance s (metres) Time(1/2t2) g 2.00 0.209 9.789 1.8 0.183 9.810 1.6 0.163 9.815 1.4 0.143 9.859 1.2 0.122 9.802 1.0 0.102 9.803 Discussion When using the ticker timer method, we noticed a few errors. First, the timer would start before the ball enter free fall causing smaller long elapse in time and subsequent low values of g. Secondly, the tape was not in parallel with the floor which caused a random deviation in elapse time. As a result, the value of g was way below the theoretical value. However, with a photogate the precision was highly increased with value nearing the theoretical value. In trial 4, the value was slightly higher possibly because the ball was dropped at an angle that reduced the distance, hence the high value. The electronic timer is the best of the three methods in precision since it provides a percentage error of 0.0009% Conclusion From experimental values, it is evident that gravitational acceleration is a constant since it depends on constant values. This support the preposition of Galileo that cannonballs of different masses falls at the same rate since they experienced the same acceleration (acceleration due to gravity). Similarly, when a coin and a feather are dropped in a vacuum where there is no air resistance they land together. This implies that determining acceleration due to gravity we measure the time of travel from a stationary point and the distance travelled which requires accuracy and precision in the instruments. Some errors noted in the values resulted from instruments. Reference List Bell, H 1916 A New Method for Determining G The Acceleration Due To Gravity. American Meteorological Society. Bill C 1990 Measurements of Acceleration Due to Gravity, Physics Teacher, v28 n5 p291-95 Cook AH 1957. Recent development in the absolute measurement of gravity. Bulletin Geodesique 34(1) 34-59. Fredrick JB 1975Introduction to Physics for Scientists and Engineers, USA: Von Hoffmann Press. Garg M, Kalimullah, Arun P and Lima FMS 2007, An accurate measurement of position and velocity of a falling object. American Journal of Physics 75(3) 254258. Gerald JH and Brush, SG 2001.Physics, the human adventure: from Copernicus to Einstein and beyond. NY: Rutgers University Press. Jewess M 2010 Optimizing the Acceleration Due To Gravity on a Planet's Surface. The Mathematical Gazette,Volume 94,Issue 530July 2010, pp. 203-215 Khongiang, L, Dkhar, A and Lato, S 2015. 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