In a vacuum, a heavy object and a light object fall at the same rate. This is a fundamental principle of physics called Galileo's principle of falling bodies.

Here's why:

* Gravity's Pull: The force of gravity acts on all objects equally, regardless of their mass.

* Acceleration due to Gravity: The acceleration due to gravity (approximately 9.8 m/s²) is constant near the Earth's surface. This means that all objects accelerate downwards at the same rate.

However, in the real world, things get a bit more complicated:

* Air Resistance: Air resistance is a force that opposes motion through the air. The amount of air resistance an object experiences depends on its shape, size, and speed. A heavier object might be less affected by air resistance than a lighter object with a large surface area (like a feather).

* Terminal Velocity: Eventually, an object falling through the air will reach a point where the force of gravity pulling it down is balanced by the force of air resistance pushing it up. This is called terminal velocity. Heavier objects will generally reach higher terminal velocities.

So, the answer depends on the context:

* In a vacuum: Both objects fall at the same rate.

* In air: The heavier object might fall faster initially, but both will eventually reach their own terminal velocities.

Let me know if you'd like to delve deeper into the concepts of air resistance or terminal velocity!