Final answer:
In the absence of air resistance, both the 1-pound ball and the 100-pound ball will hit the ground at the same time.
Step-by-step explanation:
In the absence of air resistance, both the 1-pound ball and the 100-pound ball will hit the ground at the same time.
This is due to the fact that the acceleration due to gravity is the same for all objects, regardless of their mass. In the absence of any other forces, all objects will experience the same constant acceleration.
Therefore, both balls will fall with the same acceleration and hit the ground at the same time.