The gravitational acceleration is 9.81 m/s2 here on earth at sea level. what is the gravitational acceleration at a height of 350 km above the surface of the earth, where the international space station (iss) flies? (the mass of the earth is 5.97×1024 kg, and the radius of the earth is 6370 km.) it is somewhat greater than 9.81 m/s2. it is zero, since the iss is in the state of weightlessness. it is half of 9.81 m/s2. it is somewhat less than 9.81 m/s2. it is twice of 9.81 m/s2. it is 9.81 m/s2, the same.