This is Not TrueTVBNOW 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。/ D5 ?% S& o2 Z9 u- Z
(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 * Z9 F. q" P2 Z9 ]2 jTVBNOW 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。effect is not significant. OK this explain the speed aspect.6 t" ^! c% O9 l3 k/ [; q
(b) Jumping direction: if you were in a car or a train carriage, you do not have a ' D( K O3 m, D2 E; u, @ schoice 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 7 {* _) l/ e: K4 B* N4 [tvb now,tvbnow,bttvblanding impact. Do not forget to Roll when the body hit the ground. 8 n0 l: _. z+ G! z& f( j/ KTVBNOW 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 " x' M3 J* _: D! {( E! D6 E
facing the away direction, the forward momentum will make you fall on the back www2.tvboxnow.com8 k! e- y; {2 c5 P; V4 `
of your head first, it could be a fatal hit.tvb now,tvbnow,bttvb1 [' i" h9 Y+ d" n5 C
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* N. ]3 s% k& e6 m
I doubt this is true.4 ~) C: e5 A, B8 j; k1 {
If you are carrying a forward momentum and when the body/ object landed, the3 F7 J9 L( _9 |# p& c/ I( D
momentum will continue its direction unless affect by other external force. (Baisc# }8 _4 P+ {: K8 o" |
Newton Law) ie. The body will continue to move forward, your forehead will hit - F9 R9 o) F! U# ?4 Ythe 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
