is sky diving free fall?i mean free fall is when the only force acting is gravitational force but in sky diving drag force also present?
so how sky diving can be considered as free fall?
Skydiving can indeed be considered as a form of free fall, although it is not technically a purely free fall due to the presence of drag force. Free fall typically refers to the motion of an object under the sole influence of gravity, where no other forces are acting upon it.
In the case of skydiving, while gravity is the primary force at play, there is also the force of air resistance or drag acting in the opposite direction. As the skydiver falls, their speed initially increases, until the drag force becomes stronger and starts to balance out the force of gravity. This leads to a state called terminal velocity, where the downward force of gravity and the upward force of drag are equal, resulting in a constant falling speed.
So why is skydiving still considered a type of free fall despite the presence of drag force? This is because the motion of the skydiver, even with drag force, closely mimics the idealized concept of free fall. The skydiver experiences a similar sensation of weightlessness and acceleration due to gravity, even if the presence of drag modifies their speed.
Therefore, while skydiving is not a true free fall, it is often referred to as such because the experience and physics involved closely resemble those of free fall.