Answer:[tex]2 m/s^{2}[/tex]
Step-by-step explanation:
According to Newton's second law, the acceleration [tex]a[/tex] of an object with mass [tex]m[/tex] is directly proporional to the force [tex]F[/tex] applied to that object:
[tex]F=m.a[/tex] (1)
In the first case we are given the following data:
[tex]F=28 N[/tex]
[tex]a=7 m/s^{2}[/tex]
Substituting this information in (1):
[tex]28 N=(m)(7 m/s^{2})[/tex] (2)
Isolating [tex]m[/tex]:
[tex]m=4 kg[/tex] (3) This is the mass of the object
Now if we keep this calculated mass, but we change the applied force to [tex]F=8 N[/tex], we will have:
[tex]8 N=(4 kg)a[/tex] (4)
Isolating the acceleration:
[tex]a=2 m/s^{2}[/tex] (5) This will be the acceleration of the object is the force is changed to 8 N.
