tolng d bantu secepatnya

Diketahui
F₁ = 30 N
F₂ = 12 N
m = 4 kg
DItanya
R dan a...?
Jawab
R = F₁ - F₂
R = 30 - 12
R = 18 N

F = R
F = ma
18 = 4a
a = 18/4
a = 4,5 m/s²