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Newton's Laws were dependent on an absolute convention of time such that two observers would always agree as to when a given amount of time has passed in reference to physical events. As such, his Second Law (force equals mass times acceleration) allows for a force to be applied to an object forever, allowing for continual acceleration and infinite speed.
Einstein's Theory of Relativity did away with these simplistic notions by claiming that time is relative to the observer's speed such that the faster that you are moving, the slower time appears to be moving. While Newton allowed for never ending acceleration to infinite velocity, Einstein capped velocity at a constant, the speed of light(3*108 m/s). This does not mean that that the force stops working once you reach this speed, but rather that you are always approaching but not reaching it. The closer you get to the speed of light, the less a force will actually increase change your velocity.
In addition, under Newtonian physics, mass and energy were related but distinct quantities, under Special Relativity, they are actually the same as described by the famous equation E=mc2. One way to think of this is that as an object goes faster and gains more energy, it is also gaining more mass, so the same force will cause it to accelerate less and less.
Despite how poorly Newtonian Laws describe the world as compared to Einstein's, they still have their place. Special Relativity only has a significant impact at speeds near the speed of light. As long as you are far away from such speeds, Newtonian Laws provide a sufficient enough model. They may not be as accurate, but the equations are so much more simple that the loss of exactness can be excused.
Wiki User
∙ 9y ago
Wiki User
∙ 13y agoHe didn't really modify it. The law of conservation of energy is still valid. What the Theory of Relativity did teach us is that there is an equivalence between mass and energy. Every mass has a related energy, every energy has a related mass. However, both the laws of conservation of mass, and the law of conservation of energy, still apply.
Wiki User
∙ 13y agoEinstein, changed the law to conservation of "mass-energy", recognizing that mass is converted to energy by E=mc2 .
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Which law states that energy can be neither created nor destroyed?
This law is known mainly with two different names: "Law of Conservation of Energy", or "First Law of Thermodynamics".
The law of conservation of energy states that when one form of energy is converted to another?
The law of conservation of energy says that energy is neither created nor destroyed only changed. It works hand in hand with the law of conservation of matter, because matter can be converted to energy and vice versa.
On what principle does calorimetry depends?
law of conservation of energy.
What are two statements you can make about energy based on the law of conservation of energy?
the law of conservation of energy?
What is meant by conservation of mass and energy?
Law of mass conservation in chemistry: in a chemical reaction the mass of reactants is equal to the mass of products.Law of energy conservation: in a closed system the energy remain constant.
What is Einstein exception of the law of conservation of energy?
The law of conservation of energy itself is not strictly correct since nuclear reactions change a small amount of matter into energy, if this is what you mean.
How was the law of conservation of mass determined?
The law of conservation of mass states that in an isolated system, energy is neither created nor destroyed. It was first described by Antoine Lavoisier in 1789 and was later amended by Einstein in the Law of Conservation of Mass-Energy.
What law of the scientific rule states that energy cannot be created or destroyed?
The law of Conversation of Energy
How did Albert Einstein's theory of relativity change the law conservation of energy?
It made it less efficient and stated that it was more difficult to convert the thermal energy.
What law says in chemical change energy is neither created or destroyed?
Scientists call this law the law of conservation of matter
Law that states that energy cannot be created or destroyed?
The law of Conservation of Energy. Actually, that law has been superceded now by a slightly different one. Recently (maybe 100 years ago) it was learned that energy can become mass and mass can become energy. So the law had to be modified to say that the total combination of mass and energy can't be created or destroyed.
Of thermodynamics is a restatement of the law of conservation?
The 1st Law of thermodynamics is a restatement of the law of conservation of energy.
What states have energy laws that state that energy can not be created or destroyed?
Law of conservation of energy. Energy can't be created or destroyed is the basic statement of the law of conservation of energy.
Why the law of conservation of energy can mean that you do not have unlimited sources of energy?
That is because the law of conservation of energy states that you can not create new energy.
How is friction different from the laws of conservation of energy?
There are no "laws" of conservation of energy, just the law of conservation of energy. The existence of friction doesn't change anything - the law of conservation of energy still holds.
The principle stating that matter is not created or destroyed during a chemical reaction?
law of conservation of mass
What is th law of energy called?
the law of conservation of energy
