Final answer:
The velocity of a satellite at an orbital radius of 5r can be calculated using the equation v' = sqrt(GM/(5r)).
Step-by-step explanation:
The velocity of a satellite orbiting Earth at an orbital radius r can be calculated using the equation v = sqrt(GM/r), where G is the gravitational constant, M is the mass of Earth, and r is the radius of the orbit. If the satellite is moved to an orbital radius of 5r, the new velocity can be calculated using the same equation with the new value of r.
Substituting 5r for r, the velocity v' at an orbital radius of 5r would be v' = sqrt(GM/(5r)).