Freefall is the motion of an object falling under the influence of gravity alone, without any air resistance. When an object is in freefall, it accelerates towards the Earth at a constant rate of approximately 9.81 meters per second squared. This means that the longer it falls, the faster it goes. In everyday life, we experience freefall when we drop something, like a ball or a pencil. In the absence of air resistance, both would hit the ground at the same time, regardless of their weight. This principle is famously demonstrated by Galileo and is a key concept in physics.