This is Not TrueTVBNOW 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。2 F4 ~" L$ \! Q1 l3 G
(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 * N$ u b- I& k6 U! G/ ^
effect is not significant. OK this explain the speed aspect. ! O4 M- z5 x2 h/ 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。(b) Jumping direction: if you were in a car or a train carriage, you do not have a , ^1 o9 K) u! |8 j/ e! [
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 _3 }+ w+ S7 G8 D" K, w- k; xtvb now,tvbnow,bttvblanding impact. Do not forget to Roll when the body hit the ground.tvb now,tvbnow,bttvb. f+ W5 n* O+ s6 [) Y9 m% K
(c) Make sure when you jump, you are facing the forward direction. If you are , t, u5 z: P% n- i- Y1 B; A
facing the away direction, the forward momentum will make you fall on the back * e3 D9 E% w- }" M6 A( ~www.tvboxnow.comof your head first, it could be a fatal hit. 1 M* d: Y7 Z, M* etvb 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" - ~) i8 A q6 J' `* N+ D: P" ktvb now,tvbnow,bttvbI doubt this is true. 1 g! o) v8 D: w, o6 i" D4 _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。If you are carrying a forward momentum and when the body/ object landed, the 8 }9 j! Y# `8 p1 {2 M/ z公仔箱論壇momentum will continue its direction unless affect by other external force. (Baisctvb now,tvbnow,bttvb J" Y. H F+ v' V, T# Q
Newton Law) ie. The body will continue to move forward, your forehead will hit . M$ R, G j' z( owww.tvboxnow.comthe 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
