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If i have no velocity in one direction then there is no

  1. Oct 30, 2015 #1
    if i have no velocity in one direction then there is no acceleration ?
    i deal with acceleration for sphere in fluid so i use spherical polar co ordinates (ρ,θ,Φ)
    i have no velocity in Φ then there is no acceleration in Φ direction ?
    i want to be sure
     
  2. jcsd
  3. Oct 30, 2015 #2
    Well you can't make that conclusion...imagine you have a ball thrown vertically...at the top it has no velocity but has acceleration g...so what I mean is that the current velocity in certain direction might be 0 but that does not mean that there is no acceleration in the direction...it depends on the problem of course :)
     
    Last edited by a moderator: Oct 30, 2015
  4. Oct 30, 2015 #3
    ok thanks
    i understood
     
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