This is Not Truetvb now,tvbnow,bttvb& M6 G. N( \ W) w6 t/ Y
(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 . h( g$ M8 v5 d" W) \公仔箱論壇effect is not significant. OK this explain the speed aspect. " [( G( _) f* w6 W# h3 R0 x+ \(b) Jumping direction: if you were in a car or a train carriage, you do not have a 8 b, i o* t2 n3 u7 _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 公仔箱論壇2 F; H& a, Y4 [$ Q
landing impact. Do not forget to Roll when the body hit the ground. 2 x# t- k+ ~8 u$ z" j/ B+ GTVBNOW 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 ; {; V z4 a% A+ u Q6 qfacing the away direction, the forward momentum will make you fall on the back % p! s2 ^8 q8 ?2 K, w公仔箱論壇of your head first, it could be a fatal hit.tvb now,tvbnow,bttvb1 a& u1 W# b. i2 ~7 u0 L7 K& u
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" % ?8 l9 |) G 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。I doubt this is true. + o- J1 z) \, b3 W; g' E2 @; m0 P5.39.217.77:8898If you are carrying a forward momentum and when the body/ object landed, thetvb now,tvbnow,bttvb) k# D; Q3 q4 M6 P1 B; e/ ?
momentum will continue its direction unless affect by other external force. (Baisc5.39.217.77:88981 L& p+ F3 l, N, S! h
Newton Law) ie. The body will continue to move forward, your forehead will hit tvb now,tvbnow,bttvb1 |, l3 k( g2 _- G; h v) Q7 d
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
