This is Not True f4 N: X2 u; d- d5.39.217.77(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 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。5 t# ^- K: u @* q, ~: h
effect is not significant. OK this explain the speed aspect.公仔箱論壇" s- ^" }5 p( j; |! H W( @
(b) Jumping direction: if you were in a car or a train carriage, you do not have a 公仔箱論壇6 R* H! j" v% v8 D3 H$ [+ Z
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 . k, A. Y l, r
landing impact. Do not forget to Roll when the body hit the ground. 6 ?. v# L1 E& o; ?1 z- ~# l(c) Make sure when you jump, you are facing the forward direction. If you are 2 t1 ^* l. t4 A1 C) o" B5 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。facing the away direction, the forward momentum will make you fall on the back 5.39.217.776 y1 s+ ~- R( Y" w7 Y8 j* Q
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。8 c8 {% d' g1 X. P) i4 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"6 }9 U% ~: Z" l0 @ b4 Z3 }
I doubt this is true.$ ]$ c" x3 q9 Z0 b/ [
If you are carrying a forward momentum and when the body/ object landed, the % ^5 y7 o% Z5 pTVBNOW 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 & K! R# ]0 J5 I5.39.217.77Newton Law) ie. The body will continue to move forward, your forehead will hit 公仔箱論壇. h* n# ~( ~& ?- C
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
