Jawabanmu

2014-08-08T20:43:02+07:00
Fakhir = 9000 N - 1000 N = 8000 N
a = F/m ===> 8000/2000 = 4 m/s
2014-08-09T05:22:01+07:00
9000-1000=8000
F=m.a atau a=F/m
8000/2000=4