protractor·14 年前·議論> Even run-of-the-mill joggers typically do between 3.2 and 4.2 meters per second4.2 meters per second 15.1km/h. That's faster than any jogger.6.5 meters per second is 23.4 km/h which is faster than my treadmill goes. Can humans really sustain that speed over a a marathon distance?