This is Not True , }& L' D" s$ D8 s, |7 p' @) tTVBNOW 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。(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 ( |' B. i* r/ [3 z9 _& z `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。effect is not significant. OK this explain the speed aspect.os.tvboxnow.com0 b' M% S. X$ n: d8 N
(b) Jumping direction: if you were in a car or a train carriage, you do not have a ( r) Z" n* r8 u1 |( ychoice 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 Y- e# Y; U7 }; T9 W9 u5 I; V& h
landing impact. Do not forget to Roll when the body hit the ground. % M* q* S+ m4 d, j( j8 @' Etvb now,tvbnow,bttvb(c) Make sure when you jump, you are facing the forward direction. If you are . L; a2 m/ C3 \/ e8 }! v/ ]+ Z
facing the away direction, the forward momentum will make you fall on the back os.tvboxnow.com% Q+ h1 ]# V6 k& B$ @
of your head first, it could be a fatal hit." z: C5 v- `$ [3 F h' e0 \ o: n
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" . o% J) D- V0 y3 [os.tvboxnow.comI doubt this is true.* K1 f5 G: z5 O. i( g8 W6 i4 B
If you are carrying a forward momentum and when the body/ object landed, the公仔箱論壇/ j8 y4 v7 N+ A5 V! j+ _; N; |; U
momentum will continue its direction unless affect by other external force. (Baisc公仔箱論壇+ s6 u3 x8 |% }) T
Newton Law) ie. The body will continue to move forward, your forehead will hit ' F* l" E8 ~) c5 z( p) X; d6 w Uos.tvboxnow.comthe 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
