Jump to content
  • 0
Joy Li

Retarding and drag force


internet the formula shows as this: Vt=squs of(2W/Cd.A.p) >> where as Vt is terminal velocity. W is weight. Cd is the coeficient of >> the object mass, A is the frontal area of the affect area, p is the air >> density. >> Can't it be used to find out the terminal velocity?. Is that right??? To find an object's terminal velocity from free falling.

Share this post

Link to post
Share on other sites

1 answer to this question

Recommended Posts

  • 0

That formula only works for a specific object with a specific shape, and doesn't take into account some other factors -- it's an approximation.  It's a reasonable model for certain objects, but all models have limits.


To better answer your questions, it'd be helpful if you could elaborate on what you're trying to do... are you trying to prepare for an AP physics exam, are you trying to find the terminal velocity of an unknown object, are you trying to design an object with minimal drag?  Understanding what you're trying to do will help tremendously in answering your question to a higher level of satisfaction.  There are entire courses (and even fields of study) centered around understanding an object's terminal velocity and drag/retarding forces, and knowing what you're trying to accomplish will help tremendously in narrowing down the answer.

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Terms of Use

The pages of APlusPhysics.com, Physics in Action podcasts, and other online media at this site are made available as a service to physics students, instructors, and others. Their use is encouraged and is free of charge. Teachers who wish to use materials either in a classroom demonstration format or as part of an interactive activity/lesson are granted permission (and encouraged) to do so. Linking to information on this site is allowed and encouraged, but content from APlusPhysics may not be made available elsewhere on the Internet without the author's written permission.

Copyright Notice

APlusPhysics.com, Silly Beagle Productions and Physics In Action materials are copyright protected and the author restricts their use to online usage through a live internet connection. Any downloading of files to other storage devices (hard drives, web servers, school servers, CDs, etc.) with the exception of Physics In Action podcast episodes is prohibited. The use of images, text and animations in other projects (including non-profit endeavors) is also prohibited. Requests for permission to use such material on other projects may be submitted in writing to info@aplusphysics.com. Licensing of the content of APlusPhysics.com for other uses may be considered in the future.