# Artificial satellite velocity (around the earth)

• bullroar_86
In summary, the average speed of an artificial satellite around the earth is approximately 17,500 miles per hour or 28,000 kilometers per hour. This velocity is determined by the satellite's altitude and the earth's gravitational pull, and can be changed using thrusters or other propulsion systems. Factors such as atmospheric drag, gravitational forces from other celestial bodies, and the shape and orientation of the satellite's orbit can also affect its velocity. The velocity of an artificial satellite is crucial for maintaining its orbit and completing its mission, as it can impact the time it takes to complete an orbit and the risk of falling back to earth or escaping the earth's orbit.
bullroar_86
I know how to find the the velocity if I can use the mass of the earth.

Is it possible to find it with just the radius and acceleration?

If you've already calculated the local force of gravity, then you just need to solve the centripetal acceleration equation for velocity.

Yes, it is possible to find the velocity of an artificial satellite around the Earth using just the radius and acceleration. The equation for the orbital velocity of a satellite is v = √(GM/r), where G is the gravitational constant, M is the mass of the Earth, and r is the distance between the satellite and the center of the Earth (radius). This equation shows that the velocity of a satellite is dependent on the radius and acceleration due to gravity (GM/r^2). So, if you know the radius and the acceleration due to gravity at that distance, you can calculate the velocity of the satellite. However, knowing the mass of the Earth can provide a more accurate calculation as it takes into account the varying gravitational force at different distances from the Earth's center.

## 1. What is the average speed of an artificial satellite around the earth?

The average speed of an artificial satellite around the earth is approximately 17,500 miles per hour or 28,000 kilometers per hour.

## 2. How is the velocity of an artificial satellite around the earth determined?

The velocity of an artificial satellite around the earth is determined by its altitude and the earth's gravitational pull. The higher the altitude, the slower the satellite's velocity due to the weaker gravitational pull.

## 3. Can the velocity of an artificial satellite around the earth be changed?

Yes, the velocity of an artificial satellite around the earth can be changed by using thrusters or other propulsion systems. This is often done to adjust the satellite's orbit or to maintain its position.

## 4. What factors affect the velocity of an artificial satellite around the earth?

The velocity of an artificial satellite around the earth can be affected by atmospheric drag, gravitational forces from other celestial bodies, and the shape and orientation of the satellite's orbit.

## 5. How does the velocity of an artificial satellite around the earth impact its orbit and mission?

The velocity of an artificial satellite around the earth is crucial for maintaining its orbit and completing its mission. If the velocity is too low, the satellite can fall back to earth. If it is too high, the satellite can escape earth's orbit. The velocity also affects the time it takes for the satellite to complete one orbit around the earth.

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