When a 1.0 N force acts on a 1.0 kg object that is able to move freely, the object receives an acceleration of 1.0 m/s².
For this question we can use F = ma formula.
F = net force on the object (N)
m = mass of the object (kg)
a = acceleration (m/s²)
F = 1.0 N and m = 1.0 kg
according to formula, a = 1.0 m/s²