Escape Velocity Problem

A 50 kg object is to be launched 7 x 10##^6## m out into space (not into orbit, it will fall back to earth). 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 that far into space.
B. The total kinetic energy of the object required to put the object that far into space.
C. The binding energy.
D. The escape velocity.