Actually, you dropped a decimal point somewhere there: 5400 seconds divided by 1 million is .0054 second, times 8000 meters.sec is 43.2 meters, not quite as muc

Actually, you dropped a decimal point somewhere there: 5400 seconds divided by 1 million is .0054 second, times 8000 meters.sec is 43.2 meters, not quite as much of a stretch as 4 km.