What is the speed of the Earth s motion relative to space?

Compared to the universe, the earth is only a material component of the universe, and its speed of motion is negligible, almost stationary.

Almost zero. Because the universe is so large and infinite, the speed of the earth's movement is almost zero relative to cosmic space.

The Earth rotates on its axis at all times, reaching a linear speed of 1,700 km/h at its equator. 1700 km h! This speed is quite fast for us human aircraft, but not very fast at the cosmic level.

If we convert hours to seconds, the Earth's rotation speed becomes kilometers per second.

The rotation speed of the earth: the circumference of the earth is 40,070 kilometers, and it rotates once every 24 hours, so it is very simple to calculate that people in the equatorial region of the earth are moving at a speed of 464 meters and seconds all the time.

The higher the latitude, because the rotation circle is smaller, the speed will be slower, which can be calculated by multiplying the cosine of latitude by the equatorial speed, for example, at 45 degrees north and south latitude, the cosine value is, so the speed of motion is 328 meters and seconds.

When you reach the North and South Poles, it takes 24 hours to make a circle. So it is best to launch a rocket at the equator or low latitudes of the Earth, and you can use the Earth's rotation to get faster speeds.

The Earth revolves around the Sun in the universe and revolves at a speed of kilometers per second. At the same time, the Earth rotates around its own axis, and the rotation speed at the equator is 465m s.

If the earth wants to leave the solar system, it must continue to accelerate to more than 50 kilometers per second relative to the sun, and we humans need to accelerate the earth to such a speed if we want to escape from the solar system with the earth. The fun of physics lies in the continuous exploration and in-depth study, and the fun in it is the treasure of science.

The speed of the Earth's motion is the speed of its orbit, not its escape velocity, and only the escape velocity is greater than the third cosmic velocity to please the solar system.

Because the gravitational pull of the sun is too great, it will firmly attract the earth, so the earth cannot get rid of the solar system.

It's because of the direction of movement. Third, cosmic velocity is the value calculated when the orbital velocity of a vehicle taking off from the Earth's surface coincides with the tangential direction of the Earth's orbital velocity. When the direction of travel is inconsistent with the tangent direction, the speed needs to be greater than.

So the Earth can't get out of the solar system.

gm=vr

Strictly speaking, this r represents the distance from the satellite to the center of mass of the earth.

First, the cosmic velocity is also called orbital speed, and in fact, the orbital velocity is related to the orbital radius. The common formula for calculating the first cosmic velocity in r generally represents the radius of the earth, because it calculates the orbital velocity of the earth's surface, that is, the distance from the satellite to the center of mass of the earth is equal to the radius of the earth. In fact, because of the air resistance on the surface, it is impossible for a satellite to orbit the surface.

Of course, if you understand the distance to the center of mass of the Earth as the radius of the Earth plus the height of the orbit (this expression is still very common), then it is relevant.

Yes, r in the formula is the radius of the earth.

When an artificial satellite moves in a uniform circular motion around the Earth near the ground (height is ignored), its orbital radius is approximately equal to the Earth's radius r, its centrifugal force is the Earth's gravitational force on the satellite, and its centripetal acceleration is approximately equal to the gravitational acceleration at the ground.

The weight of the object is slow to perceive = universal disturbance response force = centripetal force when the spacecraft moves in a circular motion along the earth's surface.

i.e. mg=gmmr2=mv2r

mg=mv^2/r

So v 2 = gr

r地=,g=

m/s^2v=

The formula for calculating km s is as follows: v1 = gr (m s), where g = and r = .

There are relationalities. You will understand after reading the derivation of the first cosmic velocity.

Derivation: The first cosmic velocity is the velocity around the earth that is dependent on the motion of an object near the earth's surface.

Since the gravitational force provides the centripetal force, and the gravitational force is considered to be equal to the gravitational force, therefore, f is towards mg mv 2r

The first cosmic velocity is v root number (g

r)=km s, where, r地=, g=

m/s^2。

Because artificial satellites move around the earth at a uniform speed, the radius of the earth must be taken into account to calculate the speed of motion.

The first cosmic velocity, which refers to the speed at which an object moves in a uniform circle around the earth near the ground, is called the first cosmic velocity.

The formula mg=mv 2 r is derived, and gm=v r is solved

Substituting r earth =, earth mass m =, gravitational constant m 3 (kg·s 2) and opening the square to get v km s

The above is all based on the earth as a frame of reference, so.

First, the cosmic velocity is naturally relative to the Earth's surface.

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Answer analysis] Test question analysis: The first cosmic velocity is the minimum launch velocity of the satellite moving in a circle around the earth, and it is also the maximum orbiting speed of the satellite moving around the earth, a and d are correct.

Test site: The speed of the universe was examined.

Because the first cosmic velocity is the velocity at which the earth is to move in a uniform circle.

The second cosmic velocity is the minimum velocity required to break free from the gravitational constraints of the Earth.

To get out of the dust, you must accelerate. So the speed is faster than the first universe speed.

What you are talking about is the speed of the collapse of the cover in a uniform circular motion, and the farther away from the ground, the smaller the speed. But when you want to change the orbit, you need to do an acceleration motion.