This is Not True , w0 g* t! x" w! HTVBNOW 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) 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 5 c7 w- I O5 K- A0 g公仔箱論壇effect is not significant. OK this explain the speed aspect.6 V( _2 B% H2 V
(b) Jumping direction: if you were in a car or a train carriage, you do not have a % x5 t+ L7 D, h8 h5 C; ~, Jchoice 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 tvb now,tvbnow,bttvb( [+ Y& ^' f, g" v. Q3 N
landing impact. Do not forget to Roll when the body hit the ground.6 r$ h: w0 w" q, O) q. k; {
(c) Make sure when you jump, you are facing the forward direction. If you are tvb now,tvbnow,bttvb- w( [; N" ~! V' n) `& r
facing the away direction, the forward momentum will make you fall on the back ! B! y9 K: x7 G8 I+ w& X. 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。of your head first, it could be a fatal hit. 7 w- n/ T) f1 t. g9 W) @, aThis 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" ! U: g3 l; J& {4 y- v5.39.217.77I doubt this is true. & I0 v* H# f; P. s2 I1 j. xtvb now,tvbnow,bttvbIf you are carrying a forward momentum and when the body/ object landed, the 1 V# l4 G) A0 n) ttvb now,tvbnow,bttvbmomentum will continue its direction unless affect by other external force. (Baisc 6 E6 p% ^ z( m- d2 _: }6 u5.39.217.77Newton Law) ie. The body will continue to move forward, your forehead will hit 公仔箱論壇( I/ }3 f* M1 R. B4 N
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
