Lunar Lander

You are the Command Pilot of the Lunar Lander SYNC. You are now in the final stages of your descent and you must make your landing before your fuel runs out. You select the thrust settings from your keyboard control system by pressing a key from 1 to 10. The computer does not wait for you to think because the law of gravity operates and the lander continues its descent. If you hit the surface at a velocity of more than 1(X) feet per second, you will collapse your landing gear and crash on the desolate, rock strewn surface.