Can anyone tell me NEWTON'S THEORY OF RELATIVITY in SIMPLE WORDS?
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Oh for Pete's sake people, please don't answer if you don't know what you are talking about.\n\n\nNewton certainly did have a theory of relativity, as you would have discovered if you had bothered with even the most basic web search.\n\nNewtonian relativity in simple terms, hmmm.\n\nIn simple terms Newtonian relativity simply says that all motion is relative to the observer, and not absolute. As a result we can and must choose which object is moving and which is at rest, it isn't chosen for us.\n\nFor example, if I throw a ball at your head at 10km/hr it will have EXACTLY the same effect as if I tied the ball to a string and you ran it to it at 10 km/hr. It will hurt you just as much, and the ball will bounce just as far off your head. \n\nWe normally assume that when I throw the ball it is moving, and when you run into a ball it is stationary. Netwonian relativity simply says there is no reason to assume that, and no way to prove it. For all we can prove mathematically you and I might be moving when I throw the ball, and the ball might stand still.\n\nSo why do we all KNOW the thrown ball moved? Because we refer to things that happen outside of our little world of ball, you and me. Only by referring to something else not involved, like the ground, can we say who moves and who stands still.  \n\nAnd that is essentially where we get the term Relativitivity from. All movement has to be described relative to a point outside of the actions we are describing. It can't be described bythe actual actions. Only by saying that the ground stands still and the ball moves relative to the ground cn we say that the ball moved. And only by saying that the ground stands still and you and I don't move relative to the ground can we say that you and I are stationary.\n\nWhere it gets interesting in practial terms is when our reference point is also moving. What happens if we are in a moving train doing 100km/hr and I throw a ball at your head? For you and me exactly the same thing as if we were standing on the ground, because we are making all our claculations relative to the floor of the train. The floor of the trainis our reference point. Since you and I don't move relative to the floor, and the ball does move relative to the floor there is no  difefrence t standing in the ground. \n\nBut if you were standing on the ground and I was in the train and threw the ball at you the efect would be very different for you. The ball would now hit you at the speed of the train + the 10km/hr I threw it at you. It would hit you doing 110km/hr and possibly kill you. Because our only common reference point is the ground that you stand on we have t do all our claculations form that point. W eignore the floor of the trian I am standing on an measure the speed of the ball relative to the ground only.\n\nAnd that's Newtonian relativity in a nutshell. There are all sorts of mathemetical descriptions and qualifiers, but you said you wanted it in simple terms.
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This is really simple stuff. Newtons is force, seconds is time, meters is length, and meters per second is length per time, or velocity.
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Hey babygurlgonnaloveonu you have asked what is totally QUESTION NUMBER ONE in physics. It's an exciting question which many teachers secretly don't understand and so their students get this hazy idea and kind of go thru the motions. \n\nWow, it is so basic, that it took a super-genius, I mean way smarter than Einstein, to figure it out. A good old farm boy, astrologer, magician & alchemist, religious fanatic, mathematician and all around kook. Yep. Sir Isaac Newton. You gotta wonder what kind of parents would name their kid "Sir"\n\nWell we all know what a force is, it is a sort of push or pull -- think of it as something that changes or *tries to change* the motion of stuff.\n\nNewton first figured out that if you leave a thing alone, or if the pushes and pulls on it cancel out, then it will sit there like a lump. Like those drivers wearing hats, and like sit there after the light has already turned green two minutes ago. \n\nOr else a thing  will keep moving in the same straight line direction and speed  like those drivers wearing hats who go 40 mph on the expressway with their turn signal blinking on and on. This is known as "THE HAT LAW".\n\nAll was well until he noticed that things move faster in an amount equal to how much you bully them or push them around. Twice the force, twice the fasterness and fasterness (also known as acceleration). This is called the "YOU BIG BULLY LAW".\n\nThen he discovered a fly in the ointment. His HAT and BULLY laws didn't really explain all that much. Something was gumming up this beautiful theory. We call it MASS and it is still an unknown mystery as to what it really is. So we vaguely call it the amount of stuff or matter in a thing. \n\nSo he found out that for a certain force the faster-isity (acceleration) is cut in half if you double the mass. The bully has to push twice as hard to fasterize two little kids. So he was like "I'll just add that in, and all will be cool". The "YOU BIG BULLY LAW" and "THE HAT LAW" totally did it all. Wa ta da babee!\n\nBut then Newton had a road accident. He was gunning his Harley over London bridge at like 250 when a bug  hit him in the mouth and knocked out one of his wooden teeth. He was all "Why am I so in pain?". And the bug as it squooshed said "Help! I'm a bug!"\n\nSo spitting out the splinters of his wooden tooth and the splattered bug, he had this revelation. He realized that because he was moving so fast, and the  bug slowed down so fast, that even a eentsy mass like a bug was like taking a hammer to his tooth. \n\nHe noticed that the force was equal to the mass of the bug times the speed of impact all happening in a brief moment. Since Newton spoke Latin (he  was the love child of Joe Newton and an Italian governess) he wrote "Fastus buggus ina momentum hurtus like crazy." Today we call this "momentum". It is just "mass times speed" or "force times a small moment of time". \n\nAnd he realized that the bug smashed up his tooth, but also that the bug was squashed (like a bug) because they were trading the EXACT same amount of momentum. The force on the tooth by the bug in the moment of time was PRECISELY equal to the  smacko-ing the tooth used to stop the bug dead. \n\nHe said "Hey, like he broke my tooth, but I killed him soooo dead!" He did the math and found that the force of the bug on the tooth was equal to the force of the tooth on the bug! \n\nNo way did the two equal forces cancel, after all, his tooth was hammered to splinters, and the bug was flattened. They were equal and opposite, but since one was on the tooth, and the other force was on the bug they did serious damage! Today we call this the "HELP I'M A BUG" law.\n\nNow our man 'Zack was all set. He wrote down his three laws:\n\nTHE HAT LAW (beeep! beeep! Move it Hat Guy!)\nTHE YOU BIG BULLY LAW (betcha can't kno
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OK, Law of universal gravitation can be given as:\n\nF = G(m*n/r^2)\n\nWhere F = gravitational force, G = Gravitational Constant, m = Mass 1, n = Mass 2, r = distance of seperation between centers of gravity.\n\nSo, in your example, m=20kg, n = 120kg, and r = 0.5m. Plug them in and get\nF= G(2400 kg^2)/0.25 m^2\n\nSolving for F, you get F= 9600 (kg/m)^2 * G\nSince G = 6.67300 × 10^-11 m3/kg*s^2\nYou get\n6.40608 x 10^(-7) Kilogram-meters per second squared.
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Newtons 3 laws of motion say:\n1) An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.\n2)F=MA or force = mass times acceleration. It describes how an unbalanced force acts in the first law. THIS IS THE MOST IMPORTANT DISCOVERY IN ALL THE HISTORY OF SCIENCE!!!!!\n3) For every action, there is an equal and opposite reaction.\n\nNewton also discovered that gravity is a force of attraction between two masses that is equal to the product of the two masses times the gravitational constant divided by the square of the distance between them. Or F=GMm/R^2.\n\nThe combination of all of the above explains all orbits, rocket propulsion, life the universe and everything!\n\n\nThen Einstein comes along and messes it all up. He says that there is a small error in Newton's laws that depends on the speed. For stuff going really fast, Newtons laws are just totally wrong. Gravity isn't even a force at all, it is a curvature in space time.\n\nBut for every day applications, like designing a 747 or computing the path of an artillery shell or a zillion other things, Newtons laws are still used as is because the errors are vanishingly small under normal conditions.
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If you want somebody to explain the entire theory of relativity....then that will take a while.  For the basic E=mc^2, where E=energy, m=mass, and c=speed of light (3x10^8 m/s), then in simple terms it means that a small amount of mass can give off large amounts of energy.  Another way of seeing it is by saying that mass is simply highly compressed (or smashed together) amounts of energy.
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Newton: universal absolute time, 3 dimensional Cartesian geometry, action at a distance (force), universal gravitation as a force with an inverse-square law\n\nEinstein: relative time, non-Cartesian geometry, absolute limit to speed (speed of light), 4 dimensional space-time, gravitation as a result of the curvature of space and time.
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I'll try to explain this in simple terms, but it's rather mind-twisting.  \nThese are the basic principles of Relativity:\n\n1. The speed of light is constant for all frames of reference.\n  Light goes toward you at the same rate no matter how fast you're moving away from the source.  As an example, think about someone throwing a ball at you.  If they throw the ball at 25 miles an hour and you run away from them at 10 miles an hour, then from your perspective, the ball will be approaching you at only 15 mph, because you are running away from it.  But with light, no matter how fast you run away from the approaching light, you will always "see" it coming after you at 186,000 meters per second.  But the light isn't speeding up.\n\n2. Time can speed up and slow down.\n  If you were to get in a rocket and zoom off into space going really fast (nearly the speed of light), and if you were to stay up there for a couple of years (still going really fast), you would come back to Earth to find that a couple of decades had passed.  In other words, even though you would have lived only two years, the people on Earth would have lived 20 years already.  This is because the faster you are moving physically, the slower time moves.  This is not noticeable in everyday situations, because the time change is less than a billionth of a second.  It's only a noticeable difference at really high speeds or with really sensitive atomic clocks, but it has been proven to be true.\n\n3.  No matter (physical thing made out of atoms or sub-atomic particles) can move at the speed of light, or any faster.\n  The faster something is moving, the more mass it has.  So if you were trying to accelerate something to the speed of light, the faster it got, the heavier it would get, and the harder it would be to make it go any faster.  Eventually, it would be too heavy to accelerate.  An object moving at the speed of light would theoretically have infinite mass.  Since light waves aren't matter (they're energy), they can move at the speed of light.  Same goes for gravity waves - they also move at the speed of light.\n\n4.  Space and time are meshed together in something called spacetime, which is sort of the "framework" for the universe - like the paper on which you draw a picture.  Matter (mass) bends spacetime.\n  Picture a trampoline.  If you were to place a ping pong ball on the trampoline, it would make the area below it sag a little bit, but it would hardly be noticeable, because the ping pong ball is so light.  But if you were to put a bowling ball there instead, the indentation would be much larger.  In the same way, larger masses cause more curvature in spacetime.  This concept has two consequences:\n\nA: The closer you are to a large mass, the slower time gets.  So if you were to get really close to a black hole, then time would slow down for you.\n\nB: Remember that going really fast gives you more mass?  Well, this why #2 works.  If you're in a rocket going nearly the speed of light, then your mass is going to be bigger.  That in turn means that spacetime will curve more around you, so then time will pass slower.\n\nThere's a lot morer to it than that, but those are the basics.
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General relativity is the geometrical theory of gravitation published by Albert Einstein in 1915. It unifies special relativity and Isaac Newton's law of universal gravitation with the insight that gravitation is not viewed as being due to a force (in the traditional sense) but rather a manifestation of curved space and time, this curvature being produced by the mass-energy content of the spacetime.\n\nmore info for you :)
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Read Newton's 3rd law of motion.\nAlso, use F=ma to figure out your acceleration.
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Newton's first law states: A object at rest will remain at rest and an object in motion will remain in motion (at a constant speed and direction) unless acted upon by an external force.\n\nThis is also known as the law of inertia.
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In brief: in Newton's physics, space and time are taught of as frameworks independent from the observer, and the gravity is a force. This means that, whoever observes a certain phenomenon, it has a given and fixed duration and a given and fixed size in space.\n\nIn Einstein's physics, space and time are entangled into the so-called spacetime and their measurements depend on the observer; moreover, the gravity is a distortion of the spacetime. Different observers will report different spacetime measurements for the same phenomenon and different geometrical properties of the same objects in different gravity fields.\n\nEinstein's physics, in principle, replaces Newton's physics completely, as it gives more accurate predictions with respect to experiments. However, the difference between the two is negligible at ordinary speed and gravity forces. Being Newton's physics mathematically much simpler, people prefer using it as long as they can, reserving the application of Relativity mainly to astrophysics and particle physics, where the differences are significant.
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Newton's laws of motion.\nConservation of engery.\nConservation of momentum.
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A newton is the amount of force required to accelerate a mass of one kilogram at a rate of one meter per sec per sec.\nDescription of Motion in One Dimension \nMotion is described in terms of displacement (x), time (t), velocity (v), and acceleration (a). Velocity is the rate of change of displacement and the acceleration is the rate of change of velocity. \n In order to derive new equations that can be used to describe the motion of an object in terms of its three kinematic variables: velocity, displacement, and time. There are three ways to pair them up: velocity-time, displacement-time, and velocity-displacement. In this order, they are also often called the first, second, and third equations of motion, but there is no compelling reason to learn these names. Since we are dealing with motion in a straight line, the symbol x will be used for displacement. Direction will be indicated by the sign (positive quantities point in +x direction, while negative quantities point in the -x direction). Determining which direction is positive and which negative is entirely arbitrary. The laws of physics are isotropic; that is, they are independent of the orientation of the coordinate system. As long as you are consistent, it doesn't matter. Some problems are easier to understand and solve, however, when one direction is chosen positive over another.\n\nvelocity-time\nThe relation between velocity and time is a simple one during constantly accelerated, straight-line motion. Constant acceleration implies a uniform rate of change in the velocity. The longer the acceleration, the greater the change in velocity. If after a time velocity increases by a certain amount, after twice that time it should increase by twice that amount. Change in velocity is directly proportional to time when acceleration is constant. If an object already started with a certain velocity, then its new velocity would be the old velocity plus this change. You ought to be able to see the equation in your mind's eye already.\n\nThis is the easiest of the three equations to derive formally. Start from the definition of acceleration, expand the Δv term, and solve for v as a function of t.\n\n          \na =  Δv  =  v − v0         \n  \nΔt Δt \n          \nv =  v0 + aΔt     (1) \n                  \n\nSince acceleration is also the first derivative of velocity with respect to time, this equation can also be derived using calculus. Just reverse the action of the definition. Instead of differentiating velocity to find acceleration, integrate acceleration to find velocity. Since acceleration is assumed constant, this is quite easy.\n\n          \n  a =  dv                     \n \ndt \n  dv =  a dt \nv   Δt     \n∫  dv =  ∫  a dt               \nv0   0     \nv − v0 =  aΔt  \n  v =  v0 + aΔt     (1) \n          \n\nThe symbol v0 (v nought) is called the initial velocity. It is often thought of as the "first velocity" but this is a rather naïve way to describe it. Take the case of a meteor hurtling towards the earth. What is its initial velocity? If you want v0 to be the first velocity, then the problem is over before it started. Who could possibly say what a meteor's velocity was at its birth? There is no way to answer this question. A better definition would be to say that an initial velocity is the velocity that a moving object has when it first becomes important in a problem. Say the meteor was spotted deep in space and the problem was to determine its trajectory, then the initial velocity would be the velocity at the time it was observed. But if the problem were to determine its velocity on impact, then it's initial velocity would more likely be the velocity it had when it entered the earth's atmosphere. In this case, the answer to, "What's the initial velocity?" is "It depends". This turns out to be the answer to a lot of questions.\n\nThe symbol v is then the velocity some time Δt after the initial velo
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Try this: http://en.wikipedia.org/wiki/Newton's_method
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Newton set down the 3 laws of motion\n\n1. An object in motion tends to stay in motion in a straight line until it is acted on by a force.(inertia)\n2. Force = mass x acceleration\n3. Every force has an equal and opposite force (jet propulsion)\n\nNewton also discovered that light was made of all the colors of the rainbow. He split light with a prism
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Galileo's principle of relativity essentially states that, regardless of an observer's position or velocity in the universe, all physical laws will appear constant. From this principle, it follows that an observer cannot determine either his absolute velocity or direction of travel in space.\n\nhttp://farside.ph.utexas.edu/teaching/jk1/lectures/node7.html\n\nhttp://en.wikipedia.org/wiki/Principle_of_relativity