Answer:
C: equal to mg
Explanation:
in free-fall, gravity is always the net force on an object
I think it’s Energy is lost when machines don’t work right.
<em>Anything</em> that's dropped through air is somewhat affected by air resistance. But, out of that list, the leaf and the balloon are the items that will be affected by air resistance enough so that you can plainly see it.
If you spend some time thinking about it, you can kind of understand why airplane wings and boat propellers are shaped more like leafs and balloons than like bricks and rocks.
B-things that can attract iron.