Here's why:
* Neglecting Air Resistance: In a perfect vacuum, where air resistance is negligible, the acceleration due to gravity is constant for all objects, regardless of their mass. This means they would fall at the same rate and cover the same vertical distance in the same time.
* Considering Air Resistance: However, in the real world, air resistance plays a significant role. The force of air resistance is dependent on the object's shape, size, and velocity. A heavier object with a larger surface area will experience more air resistance than a lighter object with a smaller surface area. This means the heavier object will decelerate more slowly due to air resistance, and it will take longer to cover the same distance.
In summary:
* Without air resistance: Objects of different masses will fall at the same rate.
* With air resistance: Objects of different masses will experience different amounts of air resistance, leading to different times to cover the same distance.
