This is Not True 5 Z8 M- ~6 a& t4 h6 o) `: T% ]tvb now,tvbnow,bttvb(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 ' h6 f% \& T/ F& Teffect is not significant. OK this explain the speed aspect.公仔箱論壇$ B8 x6 W' T: j3 e h2 ?0 ?
(b) Jumping direction: if you were in a car or a train carriage, you do not have a # U2 l3 \, S) I) j+ n4 Htvb now,tvbnow,bttvbchoice 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 os.tvboxnow.com( u6 m0 |. T4 F6 p5 V0 H
landing impact. Do not forget to Roll when the body hit the ground. : ~: q6 P/ u4 L' ~. Q9 [) ttvb now,tvbnow,bttvb(c) Make sure when you jump, you are facing the forward direction. If you are # c9 i& I* w9 i% H& e公仔箱論壇facing the away direction, the forward momentum will make you fall on the back ) ^( o F! k0 c: l M, j9 ETVBNOW 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.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。 i3 _& V2 Z5 Z0 M1 ^
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" ! a% q6 t& z& H" ]/ H# S& sTVBNOW 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. # ?5 }8 [, Z6 T q' a* t, d/ a% sTVBNOW 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 $ ]7 d0 c( s5 X公仔箱論壇momentum will continue its direction unless affect by other external force. (Baisc - s0 \, K6 T: y' U7 x1 dos.tvboxnow.comNewton Law) ie. The body will continue to move forward, your forehead will hit / t& a6 T$ \/ Z( S M/ D( [+ f( 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。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