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m = 10 kg
F = 50 N
Vo = 5 m/s
t = 4
dit : Vt ?
dijawab :
F = m x a
a = F/m
= 50/10
= 5 m/s²
a = (Vt-Vo)/t
5 = (Vt-5)/4
4x5 = Vt-5
20 = Vt-5
Vt = 20 + 5
Vt = 25 m/s
jadi kecepatan akhir = 25 m/s