Answer:
Feather, fork, baseball, desk, cow, tow truck, house, Earth, Sun
Explanation:
The bigger the object, the more inertia it has, since it's harder to move a bigger object. So, since a feather is the smallest thing with the least amount mass, it should be the easiest to move, giving it the least amount of inertia. It's the opposite for the Sun, since it's the biggest object on the list.