Abox of books has lessequalmore inertia than a box of cotton balls.

True.

Explanation:

For Newton, the Law of Inertia establishes the acceleration resistance offered by matter. Being inertia the property that a body has to remain at rest or in uniform rectilinear motion (MRU). This law also says that the greater the mass of matter, the greater its tendency to inertia. That is, the heavier the more likely it is to remain motionless or in the same motion.

Since a book box is heavier than a cotton box, we can say that a book box has more inertia than a box of cotton balls.