This is Not True % Z' ?9 B! J& ~" H3 c$ n2 cTVBNOW 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 W# ^8 B7 X4 f4 N; u5 A. e2 Yeffect is not significant. OK this explain the speed aspect. ' P1 o0 r3 g+ s% l2 g0 u. f. D* i5 V(b) Jumping direction: if you were in a car or a train carriage, you do not have a , s" k9 Z6 E, I0 R! i s/ b
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 ' |2 t2 }) J6 a) kTVBNOW 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. # F u& {# b$ Y(c) Make sure when you jump, you are facing the forward direction. If you are ' \& G/ q7 y& w( b5 t, f% ]) t! t
facing the away direction, the forward momentum will make you fall on the back tvb now,tvbnow,bttvb; r- S/ m# U) I$ @1 v
of your head first, it could be a fatal hit. n5 }, Q6 F) UTVBNOW 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。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" 3 s5 Q! @* r6 BI doubt this is true.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。( F* n6 n/ G/ Y. K" i
If you are carrying a forward momentum and when the body/ object landed, thewww.tvboxnow.com: e. l6 ]; V5 b c4 N& R
momentum will continue its direction unless affect by other external force. (Baisctvb now,tvbnow,bttvb% F9 l: s! q, R2 p, Y- b
Newton Law) ie. The body will continue to move forward, your forehead will 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。1 }, G; U3 a* z# C: g- e9 c
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