1. Acceleration Due to Gravity is Constant:
* This is true, but only for objects near the Earth's surface. It's approximately 9.8 m/s² and means that for every second an object falls, its downward velocity increases by 9.8 meters per second.
2. Velocity Depends on Time:
* The velocity of a falling object changes over time. It starts at zero (if dropped) and increases as it falls.
* Heavier objects DO NOT fall faster. They *do* have greater force acting on them due to their weight, but this is exactly balanced out by their greater inertia (resistance to change in motion).
3. The Importance of Air Resistance:
* In a vacuum, all objects, regardless of mass, would fall at the same rate. This is why a feather and a hammer fall at the same rate on the Moon (where there's no air).
* On Earth, air resistance plays a significant role. It's the reason why a feather falls slowly while a rock falls quickly. Air resistance is a force that opposes motion, and its effect depends on the shape and size of the object.
Summary:
* All objects near Earth's surface experience the same acceleration due to gravity (9.8 m/s²).
* Velocity changes over time as objects fall, but the *rate of change* (acceleration) is constant.
* Air resistance affects the actual velocity of falling objects, making lighter, less dense objects appear to fall slower.
