Respuesta:
B) 3 kg
Explicación paso a paso:
F = m.a
90 N = (12+m)kg · (6 m/s²)
15 = 12+m
m = 3 kg
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Respuesta:
B) 3 kg
Explicación paso a paso:
F = m.a
90 N = (12+m)kg · (6 m/s²)
15 = 12+m
m = 3 kg