This is Not True 7 X# B6 A$ V9 A6 jtvb 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 公仔箱論壇6 n0 V& b' \- E( D) f3 k* |! u. Q
effect is not significant. OK this explain the speed aspect. 5 ^% L! v d$ Btvb now,tvbnow,bttvb(b) Jumping direction: if you were in a car or a train carriage, you do not have a 1 B. q* l( h, d1 F3 }. Z% E3 d公仔箱論壇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 $ ~2 M3 l _9 t6 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。landing impact. Do not forget to Roll when the body hit the ground.tvb now,tvbnow,bttvb4 o8 _% L2 W& Y1 c% C6 P
(c) Make sure when you jump, you are facing the forward direction. If you are , D0 d1 O; b, u! a, h* K7 dtvb now,tvbnow,bttvbfacing 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。' p2 {/ u6 W+ K6 J M
of your head first, it could be a fatal hit. 3 B; d1 U2 G9 q2 X! o J( ]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"公仔箱論壇7 T! q8 l0 ?: |% O; y+ \
I doubt this is true.: t' ^0 S3 s; e0 a8 @
If you are carrying a forward momentum and when the body/ object landed, the * R* X( x8 M& {5 RTVBNOW 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。momentum will continue its direction unless affect by other external force. (Baisc , F1 Q0 k2 _$ S Q& Btvb now,tvbnow,bttvbNewton Law) ie. The body will continue to move forward, your forehead will hit 7 M+ B" g& z, N. h2 l: ]公仔箱論壇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
