This is Not True ) `* H- S: y' s/ I0 u: h( w2 G公仔箱論壇(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 a# u+ d% f- X% U公仔箱論壇effect is not significant. OK this explain the speed aspect. s! [) W- ], Y- p; s
(b) Jumping direction: if you were in a car or a train carriage, you do not have a 2 O; n( ?$ E" ]$ _# T/ a( L S5.39.217.76choice 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; N/ B. K! ^' k& [& o0 b+ g) v公仔箱論壇landing impact. Do not forget to Roll when the body hit the ground. ) \/ ^: i) L! _1 |5.39.217.76(c) Make sure when you jump, you are facing the forward direction. If you are 5 i W4 }$ I" |8 K" Z% K. d, @facing the away direction, the forward momentum will make you fall on the back tvb now,tvbnow,bttvb3 |+ o4 n2 Y" n! R: x: }. }
of your head first, it could be a fatal hit. / p4 h, a- E6 j8 x, ^0 j& l/ oThis 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"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。" T: u& \- B# D) E) i# b# |
I doubt this is true. 1 O8 |4 Z( T2 M公仔箱論壇If you are carrying a forward momentum and when the body/ object landed, theTVBNOW 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 ]% R! o+ ]2 R, I! S, C1 F
momentum will continue its direction unless affect by other external force. (Baisc 3 |, f. l6 G/ A; ]" W3 c4 NNewton Law) ie. The body will continue to move forward, your forehead will hit tvb now,tvbnow,bttvb& X/ m# `# R0 p4 s
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
