mamasing

This is Not Truetvb now,tvbnow,bttvb' ~- e' u  ~( ?; v1 s
(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
* v5 g4 t/ `* [2 z" Y( Seffect is not significant.  OK this explain the speed aspect.
3 R- |+ |% `( ?9 v  Mtvb now,tvbnow,bttvb(b) Jumping direction: if you were in a car or a train carriage, you do not have a
& _$ K! W" N5 }. ]  q% o公仔箱論壇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 公仔箱論壇* W  Q, c# q6 F9 q. |
landing impact.  Do  not forget to Roll when the body hit the ground.
7 F; i3 Q% Z9 k& I* M* g公仔箱論壇(c) Make sure when you jump, you are facing the forward direction. If you are 5.39.217.77:8898  p4 l; S* ~/ u4 m* z! G
facing the away direction, the forward momentum will make you fall on the back 公仔箱論壇5 B( C- h( z" R& C9 v  t
of your head first, it could be a fatal hit.3 r6 H4 y" D$ c
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"5.39.217.77:8898' `1 p6 Q9 z- N, M" K- Z" z9 ?# p3 n
I doubt this is true.
7 `$ H, y- A7 p, Z) P( K+ i$ c5.39.217.77:8898If you are carrying a forward momentum and when the body/ object landed, the
* u4 C% `+ s% w" o  umomentum will continue its direction unless affect by other external force. (Baisc公仔箱論壇3 N' K7 W& C9 i/ Y3 s; q
Newton Law) ie. The body will continue to move forward, your forehead will hit 5.39.217.77:8898. U1 [! Q7 d5 ~+ l
the ground first unless you lean back when you jump off the moving object.