Newton s first law can not be theoretically verified

There are some vocabulary in academia that need to be clearly notified:

Prove? Proof refers to the process of deriving the current proposition through logical deduction through other settings or laws that default to "right".

Verify? Verification refers to the use of specific conditions to deduce conclusions through propositions; Then the conditions are fulfilled to see if the conclusion deduced from the proposition is true. In fact, the word "confirmed" is more commonly used.

So as you can see, the concept of validation itself does not allow for such a thing as "proof of theory".

Newton's first law can be verified, and it has been verified a very large number of times over the past few hundred years. But none of them can be called "theory verification". Verification is non-theoretical.

So, I think you're asking, is there any other theory that shows that Newton's first law is true? Is that what it means?

If this is what it means, then Newton's first law, which we have learned now, has been modified. Newton's original words stated that the first law is similar to this: "Motion is always there, and its value does not change itself." where "motion" is the product of the object's own mass multiplied by the speed of motion.

We know that now we call this thing "momentum", which is the amount of motion.

You can see that in fact, the law discovered by Comrade Newton is what we now call the "law of conservation of momentum". Based on this, the proposition that an object will move in a uniform linear motion until an external force changes its state of motion can be deduced from the "Law of Conservation of Mass". If you consider this proposition to be Newton's first law, then it can indeed be derived from the law of conservation of momentum and the law of conservation of mass.

If the law of conservation of energy is correct, it will be correct. For reference only, points will be given for satisfaction.

The encyclopedia of Newton's First Law has a lot of information about how it can be theoretically verified.

Newton's first law was then derived through the "ideal experiment", which means that there is no or difficult experimental condition, and this law can only be said to be a corollary.

Newton's first law and Newton's first.

The second and third laws constitute a complete system of Newtonian mechanics.

Newton's first law gives the concept of an inertial frame, the first.

2. The third law and the system of particle mechanics established by Newton's laws of motion are only true for inertial frames. Therefore, Newton's first law is indispensable and is an important law of mechanics that is completely independent.

Newton's first law is not an experimental law, Newton's first law is a scientific theory generalized by further reasoning on the basis of experiments, rather than directly derived from experiments.

Sir Isaac Newton (January 4, 1643 – March 31, 1727), President of the Royal Society, a famous British physicist, an encyclopedic "all-rounder", the author of "Mathematical Principles of Natural Philosophy" and "Optics".

In his 1687 book The Laws of Nature, he described gravitation and the three laws of motion. These descriptions laid the foundation for the scientific view of the physical world for the next three centuries and became the basis of modern engineering. By demonstrating the consistency between Kepler's laws of planetary motion and his theory of gravity, he showed that the motion of terrestrial objects and celestial bodies follows the same laws of nature; It provided strong theoretical support for the heliocentric theory and promoted the scientific revolution.

In mechanics, Newton clarified the principle of conservation of momentum and angular momentum and proposed Newton's laws of motion. Optically, he invented the reflecting telescope and developed a theory of color based on the observation that a prism diverges white light into the visible spectrum. He also systematically formulated the law of cooling and studied the speed of sound.

In mathematics, Newton shared the honor of developing calculus with Gottfried Wilhelm Leibniz. He also proved the generalized binomial theorem, proposed the "Newtonian method" to approximate the zero point of a function, and contributed to the study of power series.

In economics, Newton proposed the gold standard.

Newton's Achievements:

1. In mechanics, the principle of conservation of momentum and angular momentum was clarified, Newton's laws of motion were proposed, and gravitation and the three laws of motion were described.

2. In optics, he invented the reflecting telescope, systematically formulated the law of cooling, and studied the speed of sound.

3. Mathematically, he proved the generalized = term theorem, proposed the "Newton's method" to approximate the zero point of the function, and contributed to the study of power series. In 1687, his magnum opus, The Mathematical Principles of Natural Philosophy, ushered in the era of great science.

Newton was the most influential scientist and is known as the "father of physics", and he was the founder of Newton's laws of motion, which are the foundations of classical mechanics. His discovery of the three laws of motion and the law of gravitation laid the foundation for modern physics and mechanics, and his law of universal gravitation and Copernicus's heliocentric theory laid the theoretical foundation for modern astronomy.

No, Newton's first law is a scientific theory based on further reasoning and generalization on the basis of experiments, not directly through experiments. In 1687, the English physicist Isaac Newton proposed Newton's laws of motion in his magnum opus "Mathematical Principles of Natural Philosophy", and Newton's first law of motion is one of them.

1.Newton's first law gives a frame of reference without acceleration - the inertial trace frame, which makes it meaningful for people to study physical problems and measure physical quantities, thus making it the starting point of the whole mechanics and even physics. Newton.

2. The third law and the system of particle mechanics established by Newton's laws of motion, such as the momentum theorem, the law of conservation of momentum, the kinetic energy theorem, etc., only hold true for inertial frames.

2.Newton's first law is the premise and foundation of other principles. The fundamental concepts contained in the first law, which lay the conceptual foundation of classical mechanics, thus placing it in the position of the premise of the first principle in the theoretical system, which is manifested in:

1) For the first time, it refutes the erroneous generalization of force by Aristotle and others, which has lasted for more than 2,000 years, and lays the foundation for establishing a correct concept of force.

2) For the first time, a qualitative definition of force (including the nature of force and the effect of force) was given scientifically.

3) For the first time, several basic concepts of classical mechanics were proposed.

2. The third law and the principle of the particle mechanics system established by Newton's laws of motion laid the conceptual foundation.

Force is not what sustains the motion of an object, it can only change the direction of motion of an object or produce acceleration. In the case of zero resultant external force, the object always remains at rest or moves in a straight line at a uniform speed. This is the content of the law of cattle, also known as the law of inertia.

Since the beginning of the universe, all things have been in motion, and movement is absolute.

The Earth revolves around the Sun in an approximately elliptical orbit. The reason why the earth revolves around the sun is mainly due to the effect of gravity. If there was no gravity, the Earth Sun would not exist.

According to the general theory of relativity, gravity bends space-time, and the more massive the object is, the greater the effect on space-time, so that the less massive the object rotates around the larger object. The earth revolves around the sun, and the moon revolves around the earth.

The reason why the earth does not fall on the sun is because the centrifugal force of the earth's revolution is always in equilibrium with the sun's gravitational pull, so it orbits the sun in a fixed orbit.

The rotation of the earth is also related to gravity, all celestial bodies in the universe have rotation, and the sun also has rotation. The general theory of why celestial bodies rotate is related to the formation process of celestial bodies. The solar system is formed by nebulae, which are mainly composed of various thin gases and dust.

The density distribution of nebulae is not uniform, and where the density is high, the gravitational pull is stronger, and under the action of gravity, the nebula begins to contract, and after a long evolution, the sun is formed. The remnants of dust around the Sun formed the eight planets and other small bodies we see today.

Since it is impossible for the matter before the contraction to be absolutely free of motion, and the sum of these motions with respect to the center of the contraction, the sum of the total angular momentum cannot be exactly equal to zero. According to the law of conservation of angular momentum, the total angular momentum of the final formed celestial body cannot be completely equal to zero, so it must have a rotation. This is how the rotation of the earth comes about.

Modern scientific research has shown that the Earth's revolution and rotation are not static, but these changes are very small, usually changes in speed. In the next 5 billion years, the earth will definitely not stop, and everyone can play with their mobile phones with peace of mind.

Verification of Newton's second law: the magnitude of the acceleration of an object is proportional to the force, inversely proportional to the mass of the object, and proportional to the reciprocal of the mass of the object; The direction of acceleration is the same as that of the force acting on the collapse.

Newton's second law of motion applies only to particles. For the particle system, the isolation method is generally used when using Newton's second law of motion, or Newton's second law of the particle system is used.

Newton's second law of motion applies only to inertial frames of reference. The inertial frame of reference refers to the frame of reference in which Newton's laws of motion are established, and in non-inertial frames of reference, Newton's second law of motion does not apply. However, through the introduction of inertial forces.

It is possible to make the representation of Newton's second law of motion used in non-inertial frames.

Newton's second law of motion only applies to macroscopic problems. Quantum mechanics must be used to solve microscopic problems. When the linear degree of motion of an object can be compared with the de Broglie wave of the object, the momentum and position of the object cannot be accurately known at the same time due to the uncertainty relation of particle motion, so the Newtonian dynamics equation cannot be solved without accurate initial conditions.

Newton's second law of motion only applies to low-speed problems. The theory of relativity must be used to solve the high-speed problem. Since Newton's dynamical equations are not Lorentz covariant, they cannot be compatible with the special theory of relativity.

Therefore, when the object moves at high speed, it is necessary to modify the definition of mechanical variables such as force and velocity, so that the dynamic equation can meet the requirements of Lorentz covariance, and it will be different from classical mechanics in terms of physical prediction as the speed approaches the speed of light.

Categories: Science & Engineering.

Problem description: When all objects are not subjected to force, they always remain in a state of rest or in a state of uniform linear motion. This is the famous Newton's first law.

In space, most of it is vacuum, there is no air resistance, and it can be considered almost impervious to external forces, but why do spaceships use thrusters to help the spacecraft move forward after flying out of the earth? According to Newton's first law, shouldn't turning off the thruster also maintain a uniform linear motion, so why waste fuel?

Analysis: In the universe, the gravitational force is negligible, and if you want to fly out of the earth, you need to overcome the gravitational pull of the earth.

To fly out of the solar system, you have to overcome the gravitational pull of the solar system.

Moreover, it is necessary to constantly correct the course during the flight, so it is necessary to turn on the engine intermittently.