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 when acceleration is half-Olympiad Problem

  1. Sep 15, 2013 #1
    Q: The motion of a body is given by the equation dv/dt=6-3v.If the body was at rest at t=0 then:

    The speed is 1m/s when the acceleration is half of the initial value. (True/False)



    My approach:

    At t=0 the acceleration of the particle is 6m/s^2.Therefore,
    3=6-3v

    which gives v=1m/s.
    So I selected 'true'. But the answer is given to be 'false'. What is wrong with my calculation?
     
  2. jcsd
  3. Sep 15, 2013 #2
    Nothing, the answer model is wrong.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Loading...