What is the first speed of the universe in kilometers per second?

php Xiaobian Strawberry will give you the answer: The first cosmic speed refers to the minimum speed required for an object to overcome the gravity of the earth and leave the earth and enter the universe. According to the physics formula, the first cosmic velocity is equal to 2 times the escape velocity of the earth. The Earth's escape velocity is approximately 11.2 kilometers per second. Therefore, the first cosmic velocity is approximately 22.4 kilometers per second. This means that only when an object moves at a speed of more than 22.4 kilometers per second, it can overcome the earth's gravity and enter the universe. Understanding the first cosmic velocity is of great significance to fields such as exploring the universe and launching rockets.

What is the first speed of the universe in kilometers per second

Answer: 7.9 km/s.

1. The first cosmic velocity calculation formula is GM=V²r;

In the given first cosmic velocity formula, V1 represents the speed, g represents the acceleration of gravity, and R represents the radius of the earth. . The gravitational constant G, the mass M of the central celestial body, and the distance r from the central celestial body are not used directly in this formula. Therefore, the g and R values ​​in the formula are fixed, respectively 9.8 m/s^2 and 6.37×10^6 m.

3. The first cosmic speed is divided into two nicknames: the minimum launch speed of the spacecraft and the maximum operating speed of the spacecraft.

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