This is Not True 3 B$ ~& m6 f4 Y5 T5 [- ?4 xtvb now,tvbnow,bttvb(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 ! `% Y. S/ Y$ Z- T9 @tvb now,tvbnow,bttvbeffect is not significant. OK this explain the speed aspect. 9 l& o0 x) {1 g6 @( I# F(b) Jumping direction: if you were in a car or a train carriage, you do not have a 1 X% f4 m' [) n
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 公仔箱論壇5 t! b* D3 Y6 Q# ?3 w8 x b- _/ L$ |3 z
landing impact. Do not forget to Roll when the body hit the ground. % F& q; \7 Z, i- K6 A) ITVBNOW 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。(c) Make sure when you jump, you are facing the forward direction. If you are 公仔箱論壇7 C# X8 ?5 N, L! {* E- @
facing the away direction, the forward momentum will make you fall on the back 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。+ n, t0 R# x5 A( e5 H
of your head first, it could be a fatal hit., Y; h& W) R1 b0 Z7 C0 q" W
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" 4 T0 d/ T% P; GTVBNOW 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。I doubt this is true. 3 o% G3 F& W5 A# f6 JIf you are carrying a forward momentum and when the body/ object landed, the5.39.217.77" A' i; I# I& \! ?0 q, k0 {* O
momentum will continue its direction unless affect by other external force. (Baisctvb now,tvbnow,bttvb, q: l1 F( I5 R+ A) m5 {. T
Newton Law) ie. The body will continue to move forward, your forehead will hit # N, k H6 V4 @4 O& G8 [3 Gtvb now,tvbnow,bttvbthe 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
