This is Not True: Q4 S7 J3 c: H8 v4 h6 ?5 ]
(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 2 d4 i4 m* b* J0 g% yeffect is not significant. OK this explain the speed aspect.tvb now,tvbnow,bttvb: e f# e5 L4 j- `
(b) Jumping direction: if you were in a car or a train carriage, you do not have a 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。0 g- C% N7 w+ T7 K
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 % G5 A: j9 _0 |, Z0 u0 Blanding impact. Do not forget to Roll when the body hit the ground. ; R% Q4 y5 ~ y- V5.39.217.76(c) Make sure when you jump, you are facing the forward direction. If you are 2 E: ]- n1 l9 m; e+ z
facing the away direction, the forward momentum will make you fall on the back " Q% w \6 _8 A" ^/ o# Z; R5.39.217.76of 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。, B n, [- z) Q$ N
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" % C0 `, P7 U# G0 h" k, X6 @% Ctvb now,tvbnow,bttvbI doubt this is true. % N- {) S$ z6 D+ C* i5.39.217.76If you are carrying a forward momentum and when the body/ object landed, the ; r# p2 B! X9 z" Z2 imomentum will continue its direction unless affect by other external force. (Baisc 6 k0 {- ^$ L% \' Q- gNewton Law) ie. The body will continue to move forward, your forehead will hit 5.39.217.76/ X+ M3 X, U0 ~+ b% K a
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
