This is Not True2 G, {! \; @0 h% M ~: m- t# w
(a) Unless you are travelling in extremely slow speed (5Km or less), otherwise your jump off speed is so slow in comparison to your forward speed. The counter 1 B. h5 I; M0 E+ K) x" G' F; j( R+ q# los.tvboxnow.comeffect is not significant. OK this explain the speed aspect. 2 \/ R2 u3 G: ?0 T7 L; f公仔箱論壇(b) Jumping direction: if you were in a car or a train carriage, you do not have a 3 X; x, q4 e% z: ?choice whether you are jumping forward or backward. You can only jump iside way or best a 45 degree against the forward angle. Either angle will affect your % B6 J# u9 V! i/ p! v7 n! i
landing impact. Do not forget to Roll when the body hit the ground.TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。) e% T# @5 E8 e; a
(c) Make sure when you jump, you are facing the forward direction. If you are 0 x, p9 q! x. ]tvb now,tvbnow,bttvbfacing the away direction, the forward momentum will make you fall on the back 4 M, l) _: Y$ R' i# {+ }of your head first, it could be a fatal hit. 2 z0 v+ O& D+ F! ~$ [公仔箱論壇This is my 2 cents worth.作者: mamasing 時間: 2007-4-25 03:31 PM
"向前跳的話，著地的時候，身體會向後仰，後腦撞到的危機性較大，死亡率亦較高" * a }- U) n1 W- w7 w; ]% o5 R' uI doubt this is true. ) D s! y2 E" ^5 j! h% \6 Ntvb now,tvbnow,bttvbIf you are carrying a forward momentum and when the body/ object landed, the公仔箱論壇. C) q f( {6 q6 \2 ^, D
momentum will continue its direction unless affect by other external force. (Baisctvb now,tvbnow,bttvb/ e" `2 g( `$ r7 G
Newton Law) ie. The body will continue to move forward, your forehead will hit & R8 p- X: z# Q7 Athe ground first unless you lean back when you jump off the moving object.作者: 光明的迷途 時間: 2007-4-25 09:03 PM
