* Gravity is a force: Every object with mass exerts a gravitational force on every other object with mass. The Earth, being a massive object, exerts a strong gravitational pull on objects near its surface.
* Force causes acceleration: Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This means that a greater force results in a greater acceleration.
* Constant acceleration: The force of gravity near the Earth's surface is relatively constant, resulting in a constant acceleration of objects falling towards it. This constant acceleration is approximately 9.8 m/s², often denoted as "g".
* Increasing speed: This constant acceleration means that an object's velocity increases steadily as it falls. It gains about 9.8 meters per second in speed every second it falls.
In simpler terms:
Imagine you're holding a ball. When you let go, the Earth pulls the ball down towards itself. This pull (gravity) causes the ball to start moving faster and faster as it falls. The ball's speed increases consistently until it hits the ground.
Important Note: This explanation focuses on the ideal scenario of free fall, neglecting air resistance. In reality, air resistance can significantly affect the motion of falling objects, especially for lighter or larger objects.
