# What do you mean by free fall? in Physics

Free fall refers to the moti on of an object falling under the influence of gravity, without any external forces acting on it. In free fall, the only force acting on the object is gravity, which causes the object to accelerate downward at a constant rate, known as the acceleration due to gravity.

During free fall, the object experiences zero air resistance, which means it falls at a constant acceleration regardless of its mass. The acceleration due to gravity on the surface of the earth is approximately 9.81 meters per second squared (m/s²) and is directed towards the center of the earth.

The motion of an object during free fall can be described using the equations of motion, which relate the object’s position, velocity, and acceleration at any given time. These equations can be used to calculate various parameters of the object’s motion, such as its velocity and distance traveled.

Free fall is an important concept in physics and has many practical applications, such as in skydiving, bungee jumping, and other activities that involve objects falling under the influence of gravity. Understanding free fall is also essential in understanding the behavior of objects in space and the motion of planets and other celestial bodies.