Here's why:

* Gravity: The force of gravity acts on all objects with the same acceleration, regardless of their mass. This means a feather and a bowling ball fall at the same rate in a vacuum.

* Air Resistance: In the real world, air resistance plays a significant role. Heavier objects are less affected by air resistance, while lighter objects experience more drag. This is why a feather falls slowly and a bowling ball falls quickly.

Example:

Imagine dropping a feather and a bowling ball in a vacuum chamber. Both objects will fall at the same rate, reaching the bottom simultaneously. This is because the only force acting on them is gravity, which pulls them with the same acceleration.

Conclusion:

In a vacuum, the weight of an object does not affect its falling speed. The acceleration due to gravity is constant for all objects, regardless of their mass. However, in the presence of air resistance, heavier objects fall faster due to their lower susceptibility to air drag.