This is Not True' D0 i$ ?) m G2 _- i( f
(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 ) y" j- A; p! e+ N5 F2 V) [1 k3 ptvb now,tvbnow,bttvbeffect is not significant. OK this explain the speed aspect. % E: k2 X& y. }公仔箱論壇(b) Jumping direction: if you were in a car or a train carriage, you do not have a ( \' F- [% R4 V9 y5 M% Rwww3.tvboxnow.comchoice 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 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 v/ N# J" M) s. t$ Y" @
landing impact. Do not forget to Roll when the body hit the ground. : Y3 v) m9 `9 h+ R& z(c) Make sure when you jump, you are facing the forward direction. If you are ) I) ]" K# [- x" s( n1 A) vtvb now,tvbnow,bttvbfacing the away direction, the forward momentum will make you fall on the back tvb now,tvbnow,bttvb7 _/ D% V8 c( o) I# c; Y
of your head first, it could be a fatal hit.tvb now,tvbnow,bttvb3 U0 `* I9 s+ g7 p8 k' r1 _
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" . t0 L* @4 i0 o, `8 o" i# Vtvb now,tvbnow,bttvbI doubt this is true.1 i" N8 c; Q) y* y5 @; [* f( j
If you are carrying a forward momentum and when the body/ object landed, the 1 I( H4 V% p' ~0 L$ O6 ^公仔箱論壇momentum will continue its direction unless affect by other external force. (Baisc + C) H& h% S" B: ^2 g) R& MNewton Law) ie. The body will continue to move forward, your forehead will hit www3.tvboxnow.com0 _ x2 y: W9 `- Q! f
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
