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F= 20N + 10N = 30N
a?
F=m a
30=15a
a=2
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 :)