mamasing

This is Not True公仔箱論壇1 X& k# f4 R/ W+ e0 i
(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 9 }- h. G* }, U
effect is not significant.  OK this explain the speed aspect.
1 H5 G9 T$ ?& D) L- o5.39.217.77(b) Jumping direction: if you were in a car or a train carriage, you do not have a
& Q! P9 D- G& y2 \% I4 T1 R5.39.217.77choice 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 - j. ~0 K; h8 {9 D  y5 m! C2 s
landing impact.  Do  not forget to Roll when the body hit the ground.
6 n! w5 ~/ N3 c) B7 K$ Ytvb now,tvbnow,bttvb(c) Make sure when you jump, you are facing the forward direction. If you are tvb now,tvbnow,bttvb/ s- R6 k8 H/ N9 w& w$ k2 Y; ~. ^& q
facing the away direction, the forward momentum will make you fall on the back + S/ n( z" d. M4 F* F, _0 z) Y
of your head first, it could be a fatal hit.
8 Z2 ?6 Y9 d$ f% t; }( vTVBNOW 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。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"
- }$ P& \+ U7 H, v5 Z. i% QI doubt this is true.4 P: O" d% ]' f$ g/ k
If you are carrying a forward momentum and when the body/ object landed, the4 K0 I9 u- w' ]  f# U( F% K( b
momentum will continue its direction unless affect by other external force. (BaiscTVBNOW 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。; t* I9 m, }' t
Newton Law) ie. The body will continue to move forward, your forehead will hit tvb now,tvbnow,bttvb0 s" z( n+ j3 f7 ~" v( ^
the ground first unless you lean back when you jump off the moving object.