This is Not True ' o' q6 u, [: Y5 R6 r' {3 Y* c" ?- E; B# n公仔箱論壇(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 2 I, q* ^: n, Y) N. cos.tvboxnow.comeffect is not significant. OK this explain the speed aspect. 2 ?: K7 L3 g0 N. D! }* a公仔箱論壇(b) Jumping direction: if you were in a car or a train carriage, you do not have a 3 J G/ P: z- bchoice 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 ! Z4 v& C0 @6 a+ j+ [8 z. F公仔箱論壇landing impact. Do not forget to Roll when the body hit the ground. + t& l' N, V9 }0 } WTVBNOW 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 ; `1 v" B9 O- v# @* [& j; l( [公仔箱論壇facing the away direction, the forward momentum will make you fall on the back 公仔箱論壇' [7 |& v9 g1 J& e
of your head first, it could be a fatal hit. / `9 i# V) p5 r: QTVBNOW 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。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& q# |* l0 n Tos.tvboxnow.comI doubt this is true.tvb now,tvbnow,bttvb! e: ?: _; z! {, \0 \, C
If you are carrying a forward momentum and when the body/ object landed, the公仔箱論壇! s0 ~3 F5 f: t' `' y
momentum will continue its direction unless affect by other external force. (Baisc : a& P" \9 T( H2 i. |- l公仔箱論壇Newton Law) ie. The body will continue to move forward, your forehead will hit ' T' r% H3 v Q4 I" F( jthe 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
