mamasing

This is Not TrueTVBNOW 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。2 u1 _. t) I7 w) T/ t
(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 tvb now,tvbnow,bttvb  [0 `3 H  ^9 Z3 X
effect is not significant.  OK this explain the speed aspect.
7 |  O7 j  r' ?1 Wtvb now,tvbnow,bttvb(b) Jumping direction: if you were in a car or a train carriage, you do not have a % ^+ F2 Q3 j) I3 y
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 # T* R  V/ r" F* C. N+ k# f, u% M
landing impact.  Do  not forget to Roll when the body hit the ground.tvb now,tvbnow,bttvb+ N8 }/ |3 N% m: k# ?  b/ c
(c) Make sure when you jump, you are facing the forward direction. If you are * k2 s. \( m! \/ U9 m3 R
facing the away direction, the forward momentum will make you fall on the back 公仔箱論壇: G9 h6 a, X5 ~% \" T* U" X
of your head first, it could be a fatal hit.
2 O" j; s2 E) ]; |# _/ fTVBNOW 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"
6 Q- n2 U, y. A8 wI doubt this is true.
9 m2 C: M3 n! v2 z6 E) ctvb now,tvbnow,bttvbIf you are carrying a forward momentum and when the body/ object landed, the
) w1 p: f3 ^; N+ Ztvb now,tvbnow,bttvbmomentum will continue its direction unless affect by other external force. (Baisc, j) h: s* K' X8 u, h9 l$ U3 ?
Newton Law) ie. The body will continue to move forward, your forehead will hit
9 y" W& K7 ~' E8 iTVBNOW 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。the ground first unless you lean back when you jump off the moving object.