Energy equals mass times Vi^2,Why Kenetic energy=1/2 M*V^2?
154286
Hound, did you intend this:\nE=Ea+Eb = (m^2) * (c^4) + (p^2) * (c^2)\nThis makes E = Ea^2 + Eb^2, no?\n\nAlso, an alternate, simple-minded, non-relativistic answer to why does KE = .5MV^2:\nE=F*D (Energy, Force, Distance)\nF=M*A (M is Mass, A is Acceleration)\nE=M*A*D \nD=.5*A*T^2 (T is time)\nV=A*T\nE=M*A*.5*A*(V/A)^2=.5*M*V^2
437310
Every mass in motion is said to have mechanical energy.\nHowever a mass is also structure ed with atoms wich are also moving with mechanical energy. The is the energy of the structure. You can represent it a the total mass  time velocity of light squard. Usally in the motion of masses the mass changes are very small. Hence you can consider mass as a constant. The mass time the final velocity squared of the moving mass is the mecahnical energy of maas in motion. assuming there is no friction. if there is friction you must substract the energy loss due to friction.
652701
The theoretical physics equation E = mc2 states a relationship between energy (E), in whatever form, and mass (m). In this formula, c², the square of the speed of light in vacuum, is the conversion factor required to formally convert from units of mass to units of energy, i.e. the energy per unit mass. In unit specific terms, E (Joules) = M (kilograms) · (299792458 m/s) 2.\n\nMeaning of the Formula:\nThis formula, which was discovered by Albert Einstein, proposes that when a body has a mass (measured at rest), it has a certain (a very large) amount of energy associated with this mass. This is opposed to the Newtonian mechanics, in which a massive body at rest has no kinetic energy, and may or may not have other (relatively small) amounts of internal stored energy (such as chemical or thermal energy), in addition to any potential energy it may have from its position in a field of force. That is why a body's mass, in Einstein's theory, is often called the rest energy of the body. The E of the formula can be seen as the total energy of the body, which is proportional to the mass when the body is at rest.\n\nConversely, a single photon travelling in empty space cannot be considered to have an effective mass, m, according to the above equation. The reason is that such a photon cannot be measured in any way to be at "rest" and the formula above applies only to single particles when they are at rest. Photons are generally considered to be "massless," (i.e., they have no rest mass or invariant mass) even though they have varying amounts of energy.\n\nThis formula also gives the quantitative relation of the quantity of mass lost from a resting body or an initially resting system, when energy is removed from it, such as in a chemical or a nuclear reaction where heat and light are removed. Then this E could be seen as the energy released or removed, correponding with a certain amount of mass m which is lost, and which corresponds with the removed heat or light. In those cases, the energy released and removed is equal in quantity to the mass lost, times the speed of light squared. Similarly, when energy of any kind is added to a resting body, the increase in the resting mass of the body will be the energy added, divided by the speed of light squared.
342507
E=mc^2 is a version of Einstein's famous Relativity equation. Specifically, it means that Energy is equal to Mass times the speed of light squared. In essence, it states that there is an equivalence between mass and energy. This simple statement has many profound implications... such as no object with mass can ever go faster than the speed of light!\n\nThe Energy:\nEnergy is measured in joules (J). How much energy is one joule? Not very much really. If you pick up a large apple and raise it above your head you will have used around one joule of energy in the process. On the other hand we use up huge amounts of energy every time we switch on a light. A 100 watt light bulb uses 100 joules of energy every second, i.e. one watt is one joule per second.\n\nThe Mass :\nMass is a measure of a body�s resistance to acceleration. The greater the mass the greater the resistance to acceleration, as anyone who has ever tried to push a heavy object knows. For our purposes here, we can also think of mass as the amount of matter in an object. Mass is measured in kilograms (kg), 1 kg is about the same as 2.2 pounds. Note that we haven�t said what the mass is composed of. In fact it could be anything. It doesn�t matter if we use iron, plastic, wood, rock or gravy. The equation tells us that whatever the mass is it can be turned into energy (whether it is practical to actually do so is another matter and will be dealt with in later pages in this series).\n\nThe speed of light:\nThe speed of light is close to 186,300 miles per second (300,000 km per second). In order to make the equation "work" we need to convert these numbers into units that are more suited to our purposes. In physics, speeds are measured in metres per second. This is usually abbreviated to ms-1; that is "metres times seconds to the minus one". Don�t worry if you don�t understand this notation. We could equally write m/s but using ms-1 makes the mathematics easier in the long run. Likewise, we could either say that the speed of light is 300,000,000 metres per second, or, as is more usual, express the same figure in scientific notation: 3 � 10^8 ms-1.\n I think the mass is dont increase the enrgy is relative with light speed and the mass is constant\nE=constant*C^2\n\nFor a long time the concept of "mass" had been like the concept of energy before the 19th century. There were a lot of different material substances around, but it was not clear how they related to each other, if at all.\n\nAntoine-Laurent Lavoisier, as much as anyone else, first showed that all the seemingly diverse bits of tree and rock and iron on Earth�all the "mass" there is�really were parts of a single connected whole. Through decades of meticulous experiments, aided by his able wife Marie Anne, Lavoisier proved that the substances that fill our universe can be burned, squeezed, shredded, or hammered to bits, but they won't disappear. The different sorts floating around just combine or recombine. The total amount of mass, however, remains the same. This principle�the law of conservation of mass�was one of the great scientific achievements of the 1700s.
289991
It means that energy and mass can convert from one form to the other.  It also means that a small amount of matter will convert into a very large amount of energy.  The equations reads:\n\nEnergy is equal to mass times the velocity of light (in a vacuum) squared (or times itself).
405474
This is the rest energy of a particle. Energy equals mass times the speed of light in a vacuum squared. This expression became famous for its simplicity, even though it's not really all that practical. I read once that even at absolute zero particles will still have some motion. I'm not sure how one would go about proving that since it's impossible to get anything to a temperature of absolute zero. Anyway since there will always be some movement, the more practical version is:\n\nE = mc^2 /(sqrt(1 - v^2/c^2)), where v is the speed of the particle. (sqrt() is meant to mean the square root of the argument inside the parenthesis)\n\nIt's important to note that this is only true for a particle since you have to consider binding energies if you want to look at anything more complex.
783835
gravitational potential energy\nm*g*h where m=the mass g= the acceleration of gravity which is(9.8m/s^2). h= the height.
816057
again ... conservation of (mechanical only here) energy\n\npot energy = kin energy\n\nmgh = 1/2 m V^2\n\nso V = sqrt(2gh) -- see mass irrelevant\n\nV = sqrt(2*9.8*8.53) = 12.9 m/s\n\ng=9.8m/s^2 is the acceleration due to gravity\n\ng=10m/s^2 is not a bad approximation
649603
To say its an equation involving the relation between energy possesed by a mass
759307
here we go  kinetic energy at point of shot equals potencial energy at top of the squirt\n\n1/2 m v^2 = mgh\n\nm's cancel  (Rained in seattle)\n\nv = Square root (2gh)\n\ncheck my algebra... Note, you must change cm to meters before you can answer
1014316
would you like to supply me with some formulas? im out of grade 12 physics and i forgot most of the formulas. trust me from experience, just plug numbers into a formula and things will work\n\nF=mg = ma\nFk=μkN\na= vf^2 - vi^2 / 2d
276917
KE = (1/2)m*v^2 where m is the mass of the object in kilograms and v is the velocity of the object in meters/second. Plug and chug, answer will be in Netwon-meters or Joules.
13922
Really basically, E=mc^2 (be sure to always write m and c as lower case) is the relationship between rest mass and energy. The conversion is pretty simple. The constant c is the speed of light defined as 299,792,458 m/s.\n\nWhat is more useful is perhaps an understanding of just how really huge an amount of energy that makes for even a small amount of mass. This is the reason why nuclear reactions (which convert mass into energy) are so energetic by comparison to chemical reactions (in which mass is more or less conserved).
1104990
E = mc2 is one of the most famous equations, even to non-physicists, and which states a relationship between energy (E), in whatever form, and mass (m). In this formula, c², the square of the speed of light in a vacuum, is the conversion factor required to formally convert from units of mass to units of energy, i.e. the energy per unit mass. In unit specific terms, E (joules) = M (kilograms) multiplied by (299792458 m/s)2.
28535
Well, look at the units. The first one is a distance divided by a time; speed. The second one is in the units of energy (in the MKS unit system) the Joule. The "KE" also says to me that it isn't just any energy but, kinetic energy -- the energy that something has because it is moving.\n\nFrom these two bits of information you can deduce the mass of the object (if that's what you're talking about) in question.\n\nA very basic kinematic equation is the one that describes the relationship between the mass, velocity, and kinetic energy of something in motion.\n\nKE = 1/2 * mass * velocity^2\n\nsolving for the mass would be:\n\nmass = (2*KE)/(v^2)\n\nWhich is in the neighborhood of 2000 kg.\n\nhope that helps.
83134
you really should have given numbers \n\nkinetic energy will be 1/2mv^2\n\nIts linear speed can be determined by distance over time  (d/t)\n\nthe next 3 answers need me to know what data you have in order calculate their values
72436
Kinetic Energy = 0.5 * mass * velocity^2\n\nKinetic Energy = 0.5 * 4000kg * (3m/s)^2\n\nKinetic Energy = 18,000 Joules