IndexSimple mechanical devicesTransportModern communicationNatural applicationsGalileo's testPoints the way to Newton.Newton's three laws of motion.Introduced by Newton in his Principia (1687), the three laws are:Mass and acceleration gravitationalWorks citedDynamics related to the study of forces and torques and their effect on movement. It is the branch of physics (in particular classical mechanics). It's the opposite of kinematics. Kinematics studies the movement of objects without reference to its causes. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original EssaySimple Mechanical DevicesWe can see physics in many places. One of them is a simple lever (like in a park). The levers are available in three versions, each of them has a different position. They serve to increase strength by decreasing the weight of an object at the opposite end. A simple “swing” in a park consists of a lever (the sitting position) and a fulcrum (positioned in the center). The two opposing forces counterbalance each other, creating a smooth ride through the air.TransportationThe transportation industry is no stranger to manipulating everyday physics. Cars and trains use the wheel, preventing gravity from slowing down the movement of an object, allowing it to act as an object in constant flux. Airplanes allow for lift and forward momentum. They manipulate physics by creating lift through wing shape and wing angle, both of which serve to alter airflow. Modern communication Physics is all relative to itself. This theme resonates through Einstein's theories of special and general relativity. The focus is on the physics of time, which varies throughout the universe and does not maintain a uniform structure; the velocity of an object can order the flow of time of and on that object. A manipulation of this exists in GPS satellites. These satellites take into account variations in the time flow between the GPS receiver and the satellite. Natural Applications As you are reading this sentence, physics is working. Yes… Eyes have evolved into many types. Ears hear sounds. Sounds occur through the alteration of air molecules. However, quantum physics exists in everything. Every day, for example, plants break down sunlight and absorb water and carbon dioxide, producing glucose and releasing oxygen. Galileo's testLet's go back to Galileo. It was mainly related to a form of acceleration, which occurs due to the force of gravity. Aristotle had provided an explanation of gravity by stating that objects fall into their "natural" position. Galileo set out to develop the first scientific explanation for how objects fall to the ground. According to Galileo's predictions, two metal spheres of different sizes would fall with the same acceleration rate. To test his hypothesis, he couldn't simply drop two balls from a roof and measure their falling speed. Objects fall quickly and he had to find another way to show how fast they fell. This he did by resorting to an Aristotle method: the use of mathematics as a means of modeling the behavior of objects. Since he could not measure the speed of the object, he had to find an equation that related the total distance to the total time. Through a detailed series of steps, Galileo discovered that in uniform acceleration from rest there is a proportional relationship between distance and time. With this mathematical model Galileo, the famous scientist, was able to demonstrate uniform acceleration. He did this using an experimental model: an inclined plane,upon which he rolled a perfect, round ball. This allowed him to extrapolate that in free fall, although the velocity was greater, the same proportions still applied and therefore the acceleration was constant. Pointing the way towards Newton. The effects of Galileo's system were enormous: he demonstrated mathematically that acceleration is constant, and he established a method of hypothesis and experiment that became the basis of subsequent scientific investigation. However, he did not attempt to calculate a figure for the acceleration of bodies in free fall; nor did it attempt to explain the general principle of gravity, or even why objects move in certain ways, the core of a subdiscipline known as dynamics. At the end of Two New Sciences, Sagredo offered a strong prediction: “I truly believe that… the principles set out in this little treatise, once received by minds, will lead to another more exceptional result…” This prediction would come true with the work of a man who, because he lived in a somewhat more enlightened time, was free to explore the implications of his physical studies without fear of Rome's intervention. Born in 1564 Galileo died in 1642, his name was Sir Isaac Newton. Newton's three laws of motion. In discussing the motion of the planets, Galileo had invented a term to describe the tendency of an object in motion to stay in motion, and an object at rest to stay at rest. The term was inertia. Introduced by Newton in his Principia (1687), the three laws are: First law of motion: an object at rest will remain at rest, and an object in motion will remain in motion, at constant velocity unless or until external forces act on of it. The Second Law of Motion: The overall force acting on an object is the product of its mass multiplied by its acceleration. Third Law of Motion: When one object exerts a force on another, the second object exerts a force on the first equal in magnitude but opposite in direction. These laws ended with Aristotle's system. Instead of “natural” motion, Newton represented the concept of motion at a constant speed, regardless of whether that speed is a state of rest or uniform motion. In reality, the closest thing to “natural” motion is the behavior of objects in space. There, without friction and far from the gravitational pull of the Earth or other bodies, an object set in motion will remain in motion forever due to its own inertia. From this clock it follows, coincidentally, that Newton's laws were and are universal. Mass and gravitational acceleration The first law establishes the principle of inertia, and the second law refers to the means by which inertia is measured: mass, or the resistance of an object to a change in its motion, including a change in velocity . Mass is one of the fundamental notions in the world of physics, and it too is the subject of a popular misunderstanding, which confuses it with weight. Weight, in fact, is a force, equal to the mass multiplied by the acceleration due to gravity. It was Newton, through a complicated series of steps explained in his Principia, who made the calculation of that acceleration possible, an act of quantification that had eluded Galileo. The most often used value for gravitational acceleration at sea level is 9.8 m (32 ft) per second squared. This means that in the first second an object falls at a speed of 32 feet per second, but its speed also increases at a speed of 32 feet per second per second. Therefore, after 2 seconds, its speed will be 64 feet per second; after 3 seconds 96 feet per second and so on. Please note: this is just an example. Get a customized paper from our expert writers now. Customize essayThe mass..