Jawabanmu

2014-01-25T16:47:49+07:00
M=15kg
F= 20N + 10N = 30N
a?
F=m a
30=15a
a=2
2014-01-25T17:08:41+07:00
M = 15 kg
F = 20 N + 10 N = 30 N
gaya gesek tidak ada karna lantai licin

maka a..?
ingat F = m.a
30 N = 15 kg .a
30 N/15 kg =a
2 m/s^2 = a :)