Jawabanmu

2014-06-08T15:19:01+07:00
S = v * t | 450 = 300 * t | t = 1,5 detik | klo salah , maaf ya..
2014-06-08T15:21:20+07:00
V= s/t
t= s/v
t= 450 m/300 m/s
t=1,5 s