Air Resistance

[cyruseternity]

Does air resistance affects the motion of a free falling object...of yes plz explain..?

[Nicholas Kang]

If you say free-fall, you only take gravity into account. In earth, freefall can only occur in vacuum that is empty(actually, it isn`t empty, there are virtual particles). Yes, if an object falls, gravity acts on it at first. As it speeds through air, it rubs with air and friction, which we call air resistance, build up. The air resistance oppose the movement of the moving object, that`s why when an object falls, its gravitational acceleration will eventually become less, until it reach terminal velocity, or simply touches ground if the falling distance is short enough.

 

Air resistance depends on the speed or velocity of the moving object, unlike friction. The faster you move, the greater the air resistance. In aerodynamics, air resistance is also (and usually) known as drag, D. Air resistance also depends on surface area. The larger the exposed surface area, the greater the air resistance.

 

If you want to experience air resistance in simulation on computer, try Orbiter 2010. It teaches you about aerodynamics.

 

orbit.medphys.ucl.ac.uk

[Bignose]

Does air resistance affects the motion of a free falling object...of yes plz explain..?

Yes. There are forces like drag and lift. Considering the very brief way the question was asked, I consider this brief answer sufficient, unless there is more specifics you want to ask...?