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。! `& }0 L* V1 M) e+ k+ E! _
(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 : J7 y$ K1 |* X& V5 I" f
effect is not significant. OK this explain the speed aspect. : r: s' S7 E' _0 d6 J( |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。(b) Jumping direction: if you were in a car or a train carriage, you do not have a % O) @! W* k4 t2 L" k0 l4 d( ^公仔箱論壇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 / i& T9 q# c; h. U3 o, D$ t- PTVBNOW 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。landing impact. Do not forget to Roll when the body hit the ground. " h% L" M; J, q2 R: E- XTVBNOW 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。(c) Make sure when you jump, you are facing the forward direction. If you are % K4 P( z) m# c, Y; r$ I( |7 Atvb now,tvbnow,bttvbfacing the away direction, the forward momentum will make you fall on the back ( b0 I" O4 A5 j5 T
of your head first, it could be a fatal hit. 0 U- i: ]$ s9 Q$ @5 j# Jtvb 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"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。: k; e- l8 x2 X$ s8 N
I doubt this is true. : H4 E1 i1 w. e) h4 WIf you are carrying a forward momentum and when the body/ object landed, the 5 k& @! E6 C: f( r8 `momentum will continue its direction unless affect by other external force. (Baisc; y7 K8 x7 g1 Y \1 {% C, ~- s! E9 f
Newton Law) ie. The body will continue to move forward, your forehead will hit 5.39.217.77:8898; @$ f L3 q& V: L" v
the 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
