유튜브 영상 https://www.youtube.com/watch?v=ILIFo2X7EUYCalculating the Force of Impact when Stepping off a Wall A 73 kg mr.p steps off a 73.2 cm high wall. If mr.p bends his knees such that he stops his downward motion and the time during the collision is 0.28 seconds,...www.youtube.com
대충 1~5톤을 발위에 갑자기 올려놓은거네