I realize the answer depends how where in the atmosphere speed is increased more, and whether a higher orbit or lower orbit is desired, and the shape size and weight of the craft. But I'm just curious about typical ratios. About what fraction of the fuel goes to lifting the weight of the craft? The weight of the fuel? (giving them potential energy) What fraction goes to giving the craft the kinetic energy (final speed)? What fraction goes to just overcoming friction through the atmosphere? Thanks. lots of math with the atmosphere thinning and the reynolds numbers changing and fuel mass and speed changing.