Will Heavier Objects Fall Faster?

<Tab/>Experimenting with this puzzler provided me with a learning experience I did not expect. I experimented with several solutions. One solution I found was that two identical backpacks would fall at the same rate. Then, I filled one backpack up with books and left the other one empty; to my surprise, they still fell at the same rate. The next solution I tested was with two balloons. First, I dropped …

…the result of the fall rate is the shape of the objects. For example: No matter what I did to the blown up balloon it still fell slower than the other one. I believe it was because I added air and change the form of the balloon. Even though I made it heavier, it still fell slower. In conclusion, I disagree with Aristotle's theory that the heavier the object was the faster it would fall.