The new acceleration is c) 18m/s/s
Explanation:
Net force, mass and acceleration of an object are related by Newton's second law of motion:
[tex]F=ma[/tex]
where
F is the net force on the object
m is its mass
a is its acceleration
In the first trial of this problem, a net force of [tex]F_{net}[/tex] is applied to the object, causing an acceleration of
[tex]a=9 m/s^2[/tex]
Calling the mass of the object 'm', this means that
[tex]F_{net} = ma = 9m[/tex] [N] (1)
In the second trial, the force applied is [tex]2F_{net}[/tex], so we have
[tex]2F_{net} = ma'[/tex]
where a' is the new acceleration. Substituting (1) into the second equation, we find:
[tex]2(9m) = ma' \rightarrow a' = 18 m/s^2[/tex]
This is because the acceleration is directly proportional to the force applied: therefore, if the force applied doubled, the acceleration doubles as well.
Learn more about Newton's second law:
brainly.com/question/3820012
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