Here's why:
* Air Resistance: The primary factor affecting the rate of fall is air resistance. Air resistance is a force that opposes the motion of an object through the air. The amount of air resistance an object experiences depends on its shape, size, and speed.
* A feather, for example, has a large surface area and experiences significant air resistance. It falls slowly.
* A bowling ball has a smaller surface area and less air resistance. It falls faster.
* Mass and Gravity: While gravity pulls on all objects equally, heavier objects have more inertia (resistance to changes in motion). This means that heavier objects require more force to accelerate. However, the increased force due to their greater mass precisely cancels out the increased inertia, resulting in the same acceleration due to gravity.
* In a vacuum, where there's no air resistance, all objects (regardless of mass or shape) will fall at the same rate.
The Famous Experiment: Galileo Galilei famously demonstrated this principle by dropping objects of different masses from the Leaning Tower of Pisa. Although legend suggests they landed at the same time, this experiment was likely a thought experiment, not a real one. However, the principle holds true: in a vacuum, a feather and a bowling ball would fall at the same rate.
Key Takeaway: While gravity pulls equally on all objects, air resistance plays a crucial role in how fast they fall.
