On Earth, a feather will fall more slowly than a rock when they are dropped at the same time. On the moon, the feather and rock will fall at the same speed. Why is there a difference in speed on Earth, but not on the moon?
The main reason for this difference in speed is air resistance. On Earth, the feather falls more slowly than the rock because it has a larger surface area relative to its weight, which results in more air resistance slowing it down. On the moon, however, there is no atmosphere and therefore no air resistance, so both the feather and the rock fall at the same speed. This is why objects in a vacuum, like on the moon, will fall at the same rate regardless of their mass or shape.
