This is Not True 9 l" d& w$ r4 @& R- a1 n(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 " R' D3 D2 V# K @7 ]' qeffect is not significant. OK this explain the speed aspect. * ~3 Y/ C6 {( `& _1 y! _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 5 X. L& @$ j7 b; X, l* r
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 0 I# b& e9 P5 g% y: C& C9 x4 x
landing impact. Do not forget to Roll when the body hit the ground. & `2 h; d, K( s. Ftvb now,tvbnow,bttvb(c) Make sure when you jump, you are facing the forward direction. If you are 9 n* K. U @" z% C
facing the away direction, the forward momentum will make you fall on the back / q) R5 D% T" g5 r# m1 Uof your head first, it could be a fatal hit.tvb now,tvbnow,bttvb* v) K0 q6 ~, O6 y ^/ S4 m( a# L
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" % k2 W; S4 L/ W& ~tvb now,tvbnow,bttvbI doubt this is true.公仔箱論壇! T& |' o2 n t; ^6 [
If you are carrying a forward momentum and when the body/ object landed, the4 [3 Z9 q5 [: _0 ?" ]
momentum will continue its direction unless affect by other external force. (Baisc C- Q" N$ X/ t5 Q公仔箱論壇Newton Law) ie. The body will continue to move forward, your forehead will hit % E) S9 A" ^4 ~4 O& r. sthe 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
