Here's why:
* Gravity: Gravity is a force that pulls objects towards each other. The Earth has a strong gravitational pull, attracting objects towards its center.
* Free Fall: Free fall means an object is moving under the influence of gravity alone, with no other forces (like air resistance) significantly affecting its motion.
* Acceleration: Acceleration is the rate of change of velocity. Since gravity is a constant force, it will cause a constant change in the object's velocity, resulting in acceleration.
Important Note: In real-world scenarios, air resistance can play a significant role, especially at higher speeds. However, in a theoretical vacuum (where there is no air), the only force acting on the object is gravity, and it will experience constant acceleration due to gravity (approximately 9.8 m/s² on Earth).
