This is Not True# T5 [* J$ l# d4 h) h1 F5 {
(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 D- ]% B c2 s+ ?" u: Ttvb now,tvbnow,bttvbeffect is not significant. OK this explain the speed aspect. " p5 x+ A! f; y2 E7 n7 a5.39.217.77:8898(b) Jumping direction: if you were in a car or a train carriage, you do not have a 7 I- ^8 O( U2 I& I9 ^- k/ P" ctvb 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 tvb now,tvbnow,bttvb8 h7 D: E# I9 w. ~" _; k
landing impact. Do not forget to Roll when the body hit the ground.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。. a d4 a; L2 X# w9 G) t3 v
(c) Make sure when you jump, you are facing the forward direction. If you are $ n8 P4 e* u+ a2 k2 I" W6 ofacing the away direction, the forward momentum will make you fall on the back 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。8 v% T2 i6 N/ k$ R; J1 t# H
of your head first, it could be a fatal hit.5.39.217.77:8898* l" ]! k- m) V: `: N. N6 p* D
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" 0 i1 F, ]( O# y, @; Wtvb now,tvbnow,bttvbI doubt this is true. ; S$ B2 J$ ^, c; F. X1 w+ R! a公仔箱論壇If you are carrying a forward momentum and when the body/ object landed, the & L( Q& M* h( t( ?% ?) {5.39.217.77:8898momentum will continue its direction unless affect by other external force. (Baisc: q6 z) u {4 G8 Q
Newton Law) ie. The body will continue to move forward, your forehead will hit * s3 o0 p0 Q5 z) ^1 d公仔箱論壇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
