This is Not True# N& G) f- T! F2 X. 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 5.39.217.767 T; e* N( ?% J: ^+ w
effect is not significant. OK this explain the speed aspect.! R7 U+ v9 F5 j5 f: b5 `
(b) Jumping direction: if you were in a car or a train carriage, you do not have a # B p8 P7 {; I# L5 Y
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 5.39.217.765 y; q- M9 a; M5 d" ~, u
landing impact. Do not forget to Roll when the body hit the ground.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。 p# g; } C9 P. n; F
(c) Make sure when you jump, you are facing the forward direction. If you are . h" h& i9 s( n) k
facing the away direction, the forward momentum will make you fall on the back 公仔箱論壇# T& w& h/ v! v4 Z" j; j4 ]
of your head first, it could be a fatal hit.公仔箱論壇% C, a( S8 J: d& ?* F$ {* K) 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$ l5 l! z8 i6 P0 P2 c2 R* k, N
I doubt this is true.+ {% a: c" z1 C4 n" Q& V; A
If you are carrying a forward momentum and when the body/ object landed, the 7 J$ T' ~" l2 G. d+ z+ I ITVBNOW 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. (Baisctvb now,tvbnow,bttvb1 w+ Q8 b2 [7 n+ J5 U ~) d2 B: r
Newton Law) ie. The body will continue to move forward, your forehead will hit 5 K* ~/ x3 \" q% C" z; P/ W4 k
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
