mamasing

This is Not True% G1 v1 E# X9 T7 F' Y
(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 V* d6 v: _5 J& W
effect is not significant.  OK this explain the speed aspect.5.39.217.774 U5 V, X; t5 i$ a! {+ j5 H1 v
(b) Jumping direction: if you were in a car or a train carriage, you do not have a 公仔箱論壇* D+ I- L" i# E) 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 tvb now,tvbnow,bttvb# B: w, Y- ?7 N+ L. B2 D4 e
landing impact.  Do  not forget to Roll when the body hit the ground.tvb now,tvbnow,bttvb1 ?3 B  C1 z! d5 T7 I
(c) Make sure when you jump, you are facing the forward direction. If you are
& K0 ]5 W% N  y/ h' x) p( Otvb now,tvbnow,bttvbfacing the away direction, the forward momentum will make you fall on the back . r8 Q! a/ E% x* U
of your head first, it could be a fatal hit.tvb now,tvbnow,bttvb3 ^4 w* d8 V! [; t! Z3 O  |
This is my 2 cents worth.

mamasing

"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"tvb now,tvbnow,bttvb& h- ^$ ^( y$ j: j$ _9 ~+ l; U* M
I doubt this is true.3 P* |" T$ [8 K* g; Q/ I0 j
If you are carrying a forward momentum and when the body/ object landed, the6 M' E% S# ~. w) G) |! F& v2 U
momentum will continue its direction unless affect by other external force. (Baisctvb now,tvbnow,bttvb% N; }6 j- s# t5 m" O
Newton Law) ie. The body will continue to move forward, your forehead will 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. t2 J0 ]+ ?; y* P* [
the ground first unless you lean back when you jump off the moving object.