This is Not True ; d: t. I5 w* r1 X# U. {2 Q(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 $ g* F8 C7 B$ |, ctvb now,tvbnow,bttvbeffect is not significant. OK this explain the speed aspect. O1 T1 P' ?* i$ V5.39.217.76(b) Jumping direction: if you were in a car or a train carriage, you do not have a / e) x( V% p) w
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 $ c+ o2 |6 P& j9 N b# f0 s7 |0 p2 [8 }
landing impact. Do not forget to Roll when the body hit the ground.5.39.217.76: i+ ?" F" ?" Y2 F1 q ~% j
(c) Make sure when you jump, you are facing the forward direction. If you are 公仔箱論壇8 {4 f4 M- ?3 _! K6 q7 K; K( _" U
facing the away direction, the forward momentum will make you fall on the back 公仔箱論壇7 y+ I l3 \* @# [* K; ?" L
of your head first, it could be a fatal hit. # F' \$ V$ N- h0 A/ l3 gtvb now,tvbnow,bttvbThis is my 2 cents worth.作者: mamasing 時間: 2007-4-25 03:31 PM
"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"tvb now,tvbnow,bttvb3 e( p6 H" `9 v- x2 O9 o, q
I doubt this is true. ! ~! \0 Z# B, U0 ^+ j- |If you are carrying a forward momentum and when the body/ object landed, the + {- i( U) X" m- P% R7 ~# 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。momentum will continue its direction unless affect by other external force. (Baisc公仔箱論壇( G- I7 ]( v5 J0 _# W) h
Newton Law) ie. The body will continue to move forward, your forehead will hit ! j& V! ?7 j# O; d7 K; G( d, u0 I8 V5.39.217.76the ground first unless you lean back when you jump off the moving object.作者: 光明的迷途 時間: 2007-4-25 09:03 PM
