mamasing

This is Not True
7 x: r0 a9 Y  Ztvb 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
3 E0 G% x( `% p4 c, `tvboxnow.comeffect is not significant.  OK this explain the speed aspect.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。7 I5 {4 k/ L; q1 F1 S
(b) Jumping direction: if you were in a car or a train carriage, you do not have a ( ~) v4 d7 T: R7 |8 R$ g) M5 Y! x+ j
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
* a0 K& ~8 l( v( G; Wtvb now,tvbnow,bttvblanding impact.  Do  not forget to Roll when the body hit the ground.
% g# l9 ]/ v. l( u, {: o1 ytvboxnow.com(c) Make sure when you jump, you are facing the forward direction. If you are   S5 X' h/ D# c6 e) W7 \
facing the away direction, the forward momentum will make you fall on the back
4 R0 ~% V6 f7 c  c  A. r- |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。of your head first, it could be a fatal hit." ]. y0 e# s7 B5 z
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"
0 M" i# w8 X8 G8 rI doubt this is true.
" w) a- h! J+ l8 ~  j7 K: P, CIf you are carrying a forward momentum and when the body/ object landed, theTVBNOW 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。( \- ]: A+ F+ h8 R
momentum will continue its direction unless affect by other external force. (Baisc( K( O0 [' W/ y# w7 i6 K+ }5 K
Newton Law) ie. The body will continue to move forward, your forehead will hit
" }8 s7 Z/ t4 _* O/ lthe ground first unless you lean back when you jump off the moving object.