If you consider those as aircraft and the faa would likely consider them aircraft then yes.
A drone is a craft capable of sustained flight in a 2 mile hemisphere.
Below treeline for something that is capable of flying up a mile in the sky is clearly an aircraft. A ball is unlikely to go above tree line, unless you are catapulting, in which case if you go high or into the flight path your could probably run into issues. Ballistic aircraft, possibly?
Some of the autonomous drone people I know have great pride in having a system that can fly 30 miles, uncontrolled, dropping used batteries as it goes. Just keep out of flight zones and don't be a sick is my view.