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The magnitude of the acceleration of the object (2) increases.
Explanation:
We can answer this question by applying Newton's second law of motion, which states that:
[tex]F=ma[/tex]
where
F is the vector sum of all the forces acting on an object
m is the mass of the object
a is its acceleration
We can rewrite the equation as
[tex]a=\frac{F}{m}[/tex]
So we see that the acceleration of an object is proportional to the vector sum of the forces applied to it: therefore in this problem, since the net force increases, the acceleration will increases as well.
Learn more about Newton's second law:
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