Reply to Views:tvb now,tvbnow,bttvb3 B1 v Z! H, h& F
Yes 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 ' K# L! }; P# ^0 P; k0 W6 K
! r- R( e2 ~0 P; y$ J \7 hso answer is : & c8 s f! K( ?3 L. G公仔箱論壇 m3 Z' ^; f, a) Q5 ~ f
d = t * v1 * v2 / (v1-v2)作者: views 時間: 2010-3-9 01:04 PM
