Final answer:
In a high tower scenario, a ball dropped will be in free fall and will accelerate downwards due to gravity at a constant rate. If enclosed in a box also in free fall, or on the ISS, it may appear as if there's no gravity affecting the ball allowing it to float or move straight.
Step-by-step explanation:
When you drop a ball from a high tower, it falls freely under the influence of the gravitational force. Objects in free fall experience the same acceleration due to gravity, regardless of their mass, which means they all fall at the same rate when resistance forces like air friction are negligible. This was demonstrated by Galileo's experiments, such as the one involving dropping two different masses from the Leaning Tower of Pisa, which showed they hit the ground simultaneously. In your scenario, inside a falling box or in the International Space Station (ISS), it may appear that there is no gravity since everything is falling together; hence the ball would not fall to the bottom of the box, it would stay suspended in the air, or move in a straight line if initially given a push.