Now practically we can consider air resistance as zero only when it’s found Negligible! Couple of situations can be considered for this.ġ) height from where the fall is happening is very small.ģ) area of the surface facing air resistance is small.Ĥ) density of the falling object is considerably high.ĥ) shape of the object is such (aerodynamic) that it cuts through the air without much resistance. But remember that, this is a feeling only and gravity continues to work on the falling body. You may go through this post to read in details: Freefall Equations Free Fall and Weightlessnessĭuring Freefall as there is no surface to provide the Normal Reaction Force on the freely falling body, the falling body has the feeling of weightlessness. The free-fall equations resemble the equations of linear motion, here in place of acceleration (a) we use the acceleration due to gravity (g). So when we discuss a free fall or solve a numerical related to it, we consider air resistance as zero. In Newtonian motion, Freefall is the motion of a body when the sole force acting on the body is Gravity. Now ‘Free fall’ means, the fall of the object from a height is free from all resistance. That is Gravity or Gravitational force between the earth and the object in discussion. We know objects, when thrown normally upwards, comes downwards after a while, so it’s a fall.Īnd we all know the reason behind this fall. The value of Drag force depends on these quantities:įreefall and air resistance(air drag) – FAQs and answers What is a free fall?įrom the name itself, we can see, there are 2 things.Two forces acting on a falling body are gravity and air drag. Freefall and air resistance(air drag) – FAQs and answers.
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