Given data
*The given net force is F = 75 N
*The given acceleration is a = 6.50 m/s^2
The formula for the mass of the box is given by Newton's second law as
[tex]\begin{gathered} F=ma \\ m=\frac{F}{a} \end{gathered}[/tex]Substitute the values in the above expression as
[tex]\begin{gathered} m=\frac{75}{6.50} \\ =11.53\text{ kg} \end{gathered}[/tex]Inertia means the inability of an object to move, that is mass that resists motion. Hence, the inertia of the box is 11.53 kg