This is Not True 4 V$ w |. ] A7 g, L7 |(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 6 ?( f1 S0 @) B1 v3 k4 P/ `1 F) E: ~5.39.217.77:8898effect is not significant. OK this explain the speed aspect. ! K4 m, N. k- s3 ~% k: 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。(b) Jumping direction: if you were in a car or a train carriage, you do not have a / R+ I! Q# {( ^1 x7 c. lchoice 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 . x( O1 }, K* {4 | o
landing impact. Do not forget to Roll when the body hit the ground. 0 R, `- l4 b* t2 Q(c) Make sure when you jump, you are facing the forward direction. If you are % v$ N* q" s6 c$ M6 R% _8 a5.39.217.77:8898facing the away direction, the forward momentum will make you fall on the back * J, {& Y! q- v) }- j: c( w
of your head first, it could be a fatal hit. ) b& b4 N' i( h; zThis 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。" I' m& {6 D- C* _5 \. \
I doubt this is true.公仔箱論壇- H" O8 [8 x8 {( t! q- W
If you are carrying a forward momentum and when the body/ object landed, the l4 ?: m6 K" r* DTVBNOW 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. (Baisc $ q/ L9 j) u+ [3 G5.39.217.77:8898Newton Law) ie. The body will continue to move forward, your forehead will hit 5.39.217.77:88983 }( v u. w0 M' x. \3 ^6 x* _7 [
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
