This is Not True0 G5 Y7 w. t+ P+ h, z! y. h
(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 / ~3 ~0 c. c) O4 o9 itvb now,tvbnow,bttvbeffect is not significant. OK this explain the speed aspect.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。' Q6 l; Y3 i; c
(b) Jumping direction: if you were in a car or a train carriage, you do not have a 5.39.217.77/ X1 t$ `# E; ^+ g w
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 公仔箱論壇& V3 F' ~ [7 T7 D3 E
landing impact. Do not forget to Roll when the body hit the ground.% l, c' e, i3 m( [. [
(c) Make sure when you jump, you are facing the forward direction. If you are 7 \9 C9 [. O! q5.39.217.77facing the away direction, the forward momentum will make you fall on the back " S, y, |( b) k% E1 B0 t0 R# v公仔箱論壇of your head first, it could be a fatal hit. D# \& r$ Z. s! M* itvb now,tvbnow,bttvbThis 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" " u/ M0 _9 d- B; S- iI doubt this is true.tvb now,tvbnow,bttvb: c% x; q4 }% t& g: y# L; ^
If you are carrying a forward momentum and when the body/ object landed, the : F. X3 q% O' H# w3 v. v. P4 H1 y! RTVBNOW 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. (Baisc9 n# h7 i+ h" y/ I
Newton Law) ie. The body will continue to move forward, your forehead will hit 7 p2 g4 ^- y) ^+ t* e. l
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
