Movement can be either stable or accelerating. 

Satellites are transported into space with the help of rockets. These rockets have a high accelleration, which makes it possible for them to escape Earth's gravity. 

Stable movements are rare. This is because both the speed and the direction of the moving object should remain the same. On Earth, this is practically impossible.

However, the movement of a satellite is relatively stable. Otherwise, it would not be able to remain on its orbit around Earth. If its movement was accelerating, the satellite would eventually escape Earth's orbit into space. If its movement was decelerating, it would fall back down to Earth.

As a result, the speed of the satellite must be in balance with the attractive force between it and the Earth.