The exact performance you need is dependent on a large number of engineering factors, but around 2:1 initial thrust to weight
Explanation:
The acceleration due to gravity on the surface of the Moon is approximately 1.625 m/s2, about 16.6% that on Earth's surface or 0.166 ɡ. Thus the intitial interia doesn't change from when on the moon compared to earth but rather in free-fall when inside a space capsule.
Kinetic and Potential energy sort of fight with each other as a roller coaster<span> moves. As it rolls </span>downhill<span>, it loses potential energy because it's getting closer to the ground, but gains kinetic energy because it begins to move faster</span>