1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Velocity and Acceleration understanding

  1. Jan 25, 2006 #1
    If somethings velocity is 0 can the acceleration be 0? If so why?

    I have been trying to answer this and it seems I come up with different opinons from the text to the internet.

    Which is it??
  2. jcsd
  3. Jan 25, 2006 #2
    A body is deccelerating, then its velocity starts tending to zero. Agreed. Then after sometime the velocit would reach zero, I mean the instantaneous velocity, But the decceleration might continue and hence the instantaneous acceleration is not 0.
  4. Jan 25, 2006 #3


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    However, if a body is at rest (v=0) and no external force is acting, then by newton's first and second laws the acceleration must also be zero (f=ma). Therefore, yes it is possible but only if the body is at rest.
  5. Jan 25, 2006 #4
    Thanks for the insight my fellow physic friends.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook