Board Thread:Questions and Answers/@comment-7445818-20140224065809

I know airspeed is in either miles per hour or km per hour and that altitude is in either feet or meters. What has always confused me is the distance between my plane and a target. It makes no sense for a standard missile lock-on range to be only 800 ft. For example, if I were going at 400 mi/h, then I would travel 800 ft in only 1.36 s, which is clearly not the case in-game, where I would cover these 800 unknown units of distance in about 5 seconds at that speed. Someone help? 