This is Not Truetvb now,tvbnow,bttvb- a E, Q& @2 W6 f; _
(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 公仔箱論壇) z; y8 l* Z& q; h# T3 U
effect is not significant. OK this explain the speed aspect.公仔箱論壇; B( ~3 O4 r& y- c& W; s% i2 l {
(b) Jumping direction: if you were in a car or a train carriage, you do not have a + a9 \/ A" x& k
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 * D0 V+ k1 ]. N- Hlanding impact. Do not forget to Roll when the body hit the ground.5.39.217.77:8898/ q* R1 p" h5 |4 \8 Q
(c) Make sure when you jump, you are facing the forward direction. If you are tvb now,tvbnow,bttvb' x3 V* v9 _; U
facing the away direction, the forward momentum will make you fall on the back h! Z' e2 i" u( W" \, V. {
of your head first, it could be a fatal hit. ' l) A W. _* l! D5 y9 u7 kTVBNOW 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.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"公仔箱論壇6 K& S: b) T4 \0 q
I doubt this is true. 7 j* {: J- k+ A4 ?) ?/ c/ mTVBNOW 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。If you are carrying a forward momentum and when the body/ object landed, the$ i5 s8 Q% U; k: v. Y( {
momentum will continue its direction unless affect by other external force. (Baisc5.39.217.77:8898 z3 h4 O% R/ K1 z6 H7 f0 D
Newton Law) ie. The body will continue to move forward, your forehead will hit ; ^, M2 }) y' U$ f* B3 t7 Atvb now,tvbnow,bttvbthe 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
