1. The problem statement, all variables and given/known data On the surface of a distant planet, objects experience an acceleration due to gravity of 20 m/s2. The distance from the center of the planet to its surface is 8.0 * 106 m. Find the velocity of a moon that is circular orbit about the planet at a height of 300,000 m above the planet's surface. 2. Relevant equations a = v2/r 3. The attempt at a solution 20 = v2/(8e6 + 300,000) = 12,884.1 I know this isn't right because my teacher said the acceleration due to gravity should not be 20. But I don't know how to solve it another way. Could anyone shed some insight?