This is Not Truetvb now,tvbnow,bttvb2 ^& C i O/ v2 z" O$ X2 a
(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 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。, V/ y8 ?* w E
effect is not significant. OK this explain the speed aspect. 4 V& n4 _) E+ h2 {+ d2 U0 x5 q8 ~' K& Q公仔箱論壇(b) Jumping direction: if you were in a car or a train carriage, you do not have a 1 B, t* K0 l- {; P7 u: @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 8 G! I- \$ W% i w; N9 V2 _6 dTVBNOW 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。landing impact. Do not forget to Roll when the body hit the ground. % n( h3 @) f s3 C$ ]/ c# a0 ^/ atvb now,tvbnow,bttvb(c) Make sure when you jump, you are facing the forward direction. If you are www3.tvboxnow.com' r4 g7 t A; y% d
facing the away direction, the forward momentum will make you fall on the back ' r) B: i8 E! O( v; b公仔箱論壇of your head first, it could be a fatal hit. 0 A$ {: V# u4 B* _; S! x8 R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"公仔箱論壇! G) V: p2 f" H, Q9 R: u3 d
I doubt this is true.tvb now,tvbnow,bttvb; C; g' @9 ] F T! s7 Q' l
If you are carrying a forward momentum and when the body/ object landed, thetvb now,tvbnow,bttvb0 L! t' {7 K c
momentum will continue its direction unless affect by other external force. (Baiscwww3.tvboxnow.com/ d' F8 h" ]) R* J. e8 y; R
Newton Law) ie. The body will continue to move forward, your forehead will hit 公仔箱論壇; K8 v- R! t/ B& ?
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
