Here's why:

* Gravity's Constant Pull: In a vacuum, all objects, regardless of their mass, fall with the same acceleration due to gravity. This acceleration is approximately 9.8 m/s², often represented by the letter 'g'.

* Air Resistance: In reality, air resistance plays a significant role. Lighter objects experience more air resistance relative to their mass. This means they slow down more than heavier objects, making it *appear* like heavier objects fall faster.

* The Myth of the Hammer and Feather: A famous demonstration by Apollo 15 astronaut David Scott showed a hammer and a feather falling at the same rate on the Moon's surface (where there is no air resistance).

In summary: The acceleration due to gravity is the same for all objects, but air resistance can make lighter objects appear to fall slower.