This is Not Truetvb now,tvbnow,bttvb* t3 Z7 K4 W# r U, e& E( U# Q
(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 www3.tvboxnow.com. g( B9 |0 e& N% `5 J; A
effect is not significant. OK this explain the speed aspect. ; Z3 @3 @6 t' D8 w(b) Jumping direction: if you were in a car or a train carriage, you do not have a 公仔箱論壇& X7 C: t. r# _ _5 s% p N+ q
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 5 ]# U2 k' g' T! F& X" z: h, }5 s
landing impact. Do not forget to Roll when the body hit the ground. 9 g5 E& F4 V7 S+ U8 ~# s# t(c) Make sure when you jump, you are facing the forward direction. If you are - e6 d, @0 M" p4 zfacing the away direction, the forward momentum will make you fall on the back & Z" U- N. @3 L' j* [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。of your head first, it could be a fatal hit. * C" [7 `$ Y6 b) B3 rwww3.tvboxnow.comThis 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" + o+ Z- |& h$ W+ h/ C OI doubt this is true.% w' F: T0 b/ U% v
If you are carrying a forward momentum and when the body/ object landed, the & J4 V) `4 u2 P& x5 v Owww3.tvboxnow.commomentum will continue its direction unless affect by other external force. (Baisc . T' @. k' d% Swww3.tvboxnow.comNewton Law) ie. The body will continue to move forward, your forehead will hit ( |, k' Z0 o$ X6 Q# D
the 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
