Go Back to LanderWhen you coast by inputting .01 you speed up because of lunar gravity. When you input over .01 like 50 you slow the decent so Vel. should be a negative number I suggest you start with, burn 50, altitude 272, fuel 500. To go back to the inputs click on To Input... Don't refresh or use browser back arrow because that will mess up the totals. Once back to input choose a burn number then copy the displayed fuel number into the input boxes and click BURN. When you are at 0 altitude then check the velocity parameters to see how you did. To start over click on Start by Erasing All and click on Go Back to Lander