This is Not True0 @: L) \- z' B& 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 3 u" L/ |% }- [9 o# O3 JTVBNOW 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。effect is not significant. OK this explain the speed aspect. $ A' n. f I' N0 [: G6 Z. @$ C& ^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。(b) Jumping direction: if you were in a car or a train carriage, you do not have a / {0 k; d+ i% C* xchoice 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 tvb now,tvbnow,bttvb7 b! i: o7 o ^$ l& {2 X1 h( [' W5 x
landing impact. Do not forget to Roll when the body hit the ground.+ A7 g) l. e6 w+ ]6 l
(c) Make sure when you jump, you are facing the forward direction. If you are os.tvboxnow.com! D M5 i; m& b2 F0 z/ B) c
facing the away direction, the forward momentum will make you fall on the back 公仔箱論壇. T$ z6 T- F8 }; _+ x
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。4 F. {4 N2 X2 [6 O( g" x
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"公仔箱論壇5 q y. T9 K' S: o: {6 h+ t, [
I doubt this is true." k& _$ C8 c0 g1 n9 ]
If you are carrying a forward momentum and when the body/ object landed, the: Y& V+ g# K& [6 {# l
momentum will continue its direction unless affect by other external force. (Baisc公仔箱論壇% D4 l; L% R+ w, r' T+ }5 m3 e6 v
Newton Law) ie. The body will continue to move forward, your forehead will hit 1 Z" W% U. Y$ s" s; e0 w1 Y/ ^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
