This is Not Truewww3.tvboxnow.com Z4 P8 B; A! G+ p) r
(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 6 F+ s* ?3 M6 e% b! A3 Q公仔箱論壇effect is not significant. OK this explain the speed aspect.tvb now,tvbnow,bttvb, z+ ^# X' [2 _
(b) Jumping direction: if you were in a car or a train carriage, you do not have a tvb now,tvbnow,bttvb0 q! `6 J# Q& h/ z$ e0 u8 H. f
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 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。! Z r7 ~' ~+ D
landing impact. Do not forget to Roll when the body hit the ground.- r/ N+ z- w5 @' L- G: P5 V% d
(c) Make sure when you jump, you are facing the forward direction. If you are ) P: o% v( s6 k+ f. X2 Xfacing the away direction, the forward momentum will make you fall on the back 公仔箱論壇7 {2 V/ N8 L! v( X* q8 ^! t
of your head first, it could be a fatal hit.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。- i ` `% _1 Y; I. ~
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4 |/ Z, j6 \, o- m1 L$ i
I doubt this is true.tvb now,tvbnow,bttvb. ^9 K4 }/ T* B, e8 ]
If you are carrying a forward momentum and when the body/ object landed, the - N8 @# g) q, |" Lmomentum will continue its direction unless affect by other external force. (Baisc+ c. N7 @- l! q( e+ T
Newton Law) ie. The body will continue to move forward, your forehead will hit ' k0 K M8 y C3 b- Y" Itvb 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
