Reply to Views: . a9 F& k- f$ Z/ G( Q5 PYes this is simple calculation, but you have made the first step only. You may get only half point while the question is asking about the distance, which you have simplified your first step t2 - t1 = d/v2 - d/v1 into d=???.作者: lalalaudh 時間: 2010-3-9 12:35 PM
t = t2 - t1 = d/v2 - d/v1 " m5 K; u; s4 E! i公仔箱論壇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。- Q0 f7 Y% T2 q3 C
so answer is : & \3 E/ E0 D; ]2 utvb now,tvbnow,bttvb ! ^' D/ `6 H% f Yd = t * v1 * v2 / (v1-v2)作者: views 時間: 2010-3-9 01:04 PM
