Step-by-step explanation:
The acceleration due to gravity at a distance equal to the radius of the Earth above its surface is approximately 9.8 m/s^2, which is the same as the acceleration due to gravity at the surface of the Earth. This is because the gravitational force acting on the satellite is determined by the mass of the Earth and the distance between the satellite and the center of the Earth, and at a distance equal to the radius of the Earth, these factors cancel out to produce an acceleration equal to the surface acceleration.