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Anonymous users2024-02-08If you don't say it, don't say it, when the satellite revolves around the earth, the gravitational force provides the centripetal force, mv 2 r=gmm r 2, so v 2=gm r= so when the satellite orbit around the earth is circular, the maximum velocity is. to do elliptical motion (the initial velocity is too large, the gravitational force is not enough to provide centripetal force, so it does centrifugal motion, but there is acceleration towards the center of the earth, so it will be slowly pulled back. Experience it for yourself).
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Anonymous users2024-02-07To accelerate, you need to have a dynamic support, not all at once, but acceleration to this point, at which point the object doesn't fall on the Earth, like a magnet, in a state that both repels and attracts, and is the lowest value that can escape the gravitational pull of the Earth, by acceleration.
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Anonymous users2024-02-061. Cosmic velocity is the minimum velocity required to launch artificial earth satellites, interplanetary and interstellar vehicles from the surface of the earth into space. The reason why artificial satellites can orbit the earth is because they have the right speed, and if the speed is not large enough, they will fall back to the ground; If the velocity is too high, it will detach from the gravitational field of the earth or the gravitational field of the sun.
2. The definition of cosmic velocity gives three ranges of motion of artificial celestial bodies. The effects of air resistance and light pressure are not taken into account.
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Anonymous users2024-02-05The three velocities are: quantum entanglement, wormhole traversal, and the expansion rate of the universe itself.
If human beings want to use it, with the current level of technology, it is still a fantasy. At present, the human race is still at the level of the Kardashev civilization, and has not even reached the first level of the lowest level.
However, if human beings can reach level 3 civilization, they may be able to control these three speeds.
Speed of light definition:
Refers to the speed at which light waves or electromagnetic waves propagate in a vacuum or medium. The speed of light in a vacuum is the maximum speed of motion of an object in nature that has been discovered so far.
It is independent of the speed of the observer relative to the light source, i.e. the speed of light measured in the inertial frame relative to the stationary and moving light source is the same.
The mass of the object will increase with the increase in velocity, and when the speed of the object is close to the speed of light, its mass will tend to infinity, so it is impossible for an object with mass to reach the speed of light.
Only photons with zero rest mass are always moving at the speed of light. The speed of light is superimposed on any speed, and the result is still the speed of light. The synthesis of velocity does not follow the laws of classical mechanics, but follows the relativistic laws of velocity synthesis.
The third cosmic velocity (v3) is the minimum velocity required to launch a spacecraft from the earth's surface, fly out of the solar system, and roam the vast galaxy, which is called the third cosmic velocity. According to the theory of mechanics, the third cosmic velocity v3 = kilometers and seconds.
The first cosmic velocity is the minimum speed at which a vehicle or satellite takes off and the maximum speed at which it orbits the earth. >>>More
First cosmic velocity (v1) The velocity that a spacecraft must have when moving in a circle along the earth's surface, also known as orbital velocity. According to the theory of mechanics, it is possible to calculate v1 7 9 km seconds. The spacecraft is orbiting at an altitude of more than hundreds of kilometers above the surface of the ground, and the gravitational pull of the ground on the spacecraft is smaller than that on the ground, so its speed is slightly less than V1. >>>More
。"Satellite orbital velocity" refers to the "orbital speed" of the satellite moving in a circle around the earth, and among the above three velocities, the "second cosmic velocity" is the largest, and the size ratio is smaller. And the higher you are from the earth's surface, the lower the velocity. >>>More
1. The launch speed is the speed at which the satellite and the launch vehicle are separated. 2. If the launch speed is lower than the first cosmic velocity, the launched satellite will return to the ground due to the gravitational pull of the earth, so the first cosmic velocity is the minimum launch velocity. So, you're right to understand it that way >>>More