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!

Vectors - velocity is changing but speed is not

  1. Feb 5, 2014 #1
    Vectors -- velocity is changing but speed is not...

    1. The problem statement, all variables and given/known data
    Which pair of vectors represent an object whose velocity is changing but whose speed is NOT changing?
    15qau0j.jpg

    2. Relevant equations



    3. The attempt at a solution

    E? V is going left, indicating negative, while acceleration goes in the other direction.
     
  2. jcsd
  3. Feb 5, 2014 #2

    NascentOxygen

    User Avatar

    Staff: Mentor

    But that acceleration is going to change the speed. It will, initially, decrease the speed. E is not correct.
     
  4. Feb 5, 2014 #3
    #C, D, E can't be correct then by that logic... I hope I'm interpreting that correctly.
     
  5. Feb 5, 2014 #4

    haruspex

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    Right... and one more - which?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Vectors - velocity is changing but speed is not
Loading...