Orbital Energy

A 60 kg object is to be launched into orbit, 7 x 10##^6## m above the Earth’s surface. Given that the radius of the earth is 6.4 x 10 ##^6## m and the mass of the earth is 6.0 x 10 ##^{24}## kg, find:
A. The work done to put the object into orbit.
B. The velocity required to put the object into orbit.
C. The velocity of the object once it is in orbit.