Ten days after it was launched toward mars in december 1998

Question

Solve the all parts of following question given below:

Question: Ten days after it was launched toward Mars in December 1998, the Mars Climate Orbiter spacecraft (mass 629 kg) was 2.87 x 106 km from the earth and traveling at 1.20 x 10⁴ km/h relative to the earth. At this time, what were the following-

(a) The spacecraft's kinetic energy relative to the earth.

J

(b) The potential energy of the earth-spacecraft system.

J

Please use as much detail as possible in your answer. Thanks.