Answer:
the two balls will hit the ground at the same time.
Explanation:
The time of dropping, in the following equation, is related to both the distance travel s and the gravitational acceleration g, which are the same for both ball (if we neglect air resistance), no matter what their mass are.
[tex]s = gt^2/2[/tex]
[tex]t^2 = 2s/g[/tex]
So the time it takes to drop 2 balls are the same. They will hit the ground at the same time.