You have a very heavy steel ball and a very light plastic
ball. If both are dropped from the same height at the
same time, and there is no air resistance, then both
objects will hit the ground at the same time.
True
False

True

Explanation:

As both the objects are affected by the same force (gravity).

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.