mamasing

This is Not True
% v0 q: s; D. n+ M: V$ h* q8 H, wtvb now,tvbnow,bttvb(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
" a9 [, F7 q/ O1 o; }  i, Veffect is not significant.  OK this explain the speed aspect.
0 f. h* X  f5 d; i" g公仔箱論壇(b) Jumping direction: if you were in a car or a train carriage, you do not have a 公仔箱論壇; N' o4 E0 D' u/ j- @. M
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
3 p: Q9 v- W% u. J3 Y+ Ftvb now,tvbnow,bttvblanding impact.  Do  not forget to Roll when the body hit the ground.5.39.217.77( \- l! H, @3 l  K
(c) Make sure when you jump, you are facing the forward direction. If you are tvb now,tvbnow,bttvb6 l" e2 ^. x: J& ]6 v; {# X
facing the away direction, the forward momentum will make you fall on the back tvb now,tvbnow,bttvb' ?! j5 T2 @5 a; D3 s- w5 M
of your head first, it could be a fatal hit.
; C! f: ~/ B# @$ M- A. u, PThis 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"
3 l- W* ?5 H( X; _$ F/ dI doubt this is true.
; K$ I4 h" A$ N: F5 Z: FIf you are carrying a forward momentum and when the body/ object landed, thetvb now,tvbnow,bttvb$ M  U4 v+ I6 G5 A3 h; ^* i) ~
momentum will continue its direction unless affect by other external force. (Baisc
4 K3 {/ x, O2 E5.39.217.77Newton Law) ie. The body will continue to move forward, your forehead will hit
" o  ^2 W3 x! mtvb now,tvbnow,bttvbthe ground first unless you lean back when you jump off the moving object.