This is Not Truewww2.tvboxnow.com7 a* L H$ j5 l
(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" W0 X% p! {# g% F! g
effect is not significant. OK this explain the speed aspect. 5 _0 s" ^2 V* N( p- r/ _9 C(b) Jumping direction: if you were in a car or a train carriage, you do not have a \& @+ C2 Q' @- }; }; ^6 g mtvb now,tvbnow,bttvbchoice 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 ' j m- N7 D" mtvb now,tvbnow,bttvblanding impact. Do not forget to Roll when the body hit the ground." _+ `6 \# F, K p% S. ]
(c) Make sure when you jump, you are facing the forward direction. If you are 公仔箱論壇8 N! L0 W6 z% J! Z
facing the away direction, the forward momentum will make you fall on the back ; @" Z7 E4 t# T0 g. J4 R7 `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. 6 t- ]1 \- Z. ?# k6 uTVBNOW 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" " R2 s. F3 h# n) \, k4 L2 O' y: Y4 yI doubt this is true. , Y+ \. f- n8 e- O, n' V8 r1 P. d- EIf you are carrying a forward momentum and when the body/ object landed, the ' {3 N3 t2 A% v& z' T8 c! 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。momentum will continue its direction unless affect by other external force. (Baisc 6 V) j/ y \" u+ c$ xtvb now,tvbnow,bttvbNewton Law) ie. The body will continue to move forward, your forehead will hit 6 Y5 ?; A: [4 J' b0 t( atvb 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
