Here's why:
* Gravity's Constant Pull: All objects, regardless of their mass, experience the same gravitational acceleration near the surface of the Earth. This acceleration, denoted by 'g', is approximately 9.8 m/s².
* Force and Acceleration: The force of gravity acting on an object is directly proportional to its mass (F = mg). However, acceleration (a) is the result of force divided by mass (a = F/m).
* Cancellation: Since the force of gravity increases with mass, but the acceleration is inversely proportional to mass, these two effects cancel each other out. This means that a heavier object experiences a stronger gravitational force, but it also has more inertia (resistance to change in motion), resulting in the same acceleration as a lighter object.
Important Note: This applies only in a vacuum. In the real world, air resistance plays a significant role.
* Air Resistance: Air resistance is a force that opposes the motion of an object through the air. It depends on factors like the object's shape, size, and speed.
* Terminal Velocity: As an object falls, its speed increases, and so does the air resistance acting on it. Eventually, the air resistance becomes equal to the force of gravity, and the object stops accelerating, reaching a constant speed called terminal velocity. Lighter objects tend to reach terminal velocity at lower speeds than heavier objects due to the lower force of gravity acting on them.
In Summary: In a vacuum, all objects fall at the same rate regardless of their mass. In the presence of air resistance, heavier objects will fall faster initially, but they will eventually reach a lower terminal velocity than lighter objects.
