1. Not finding help here? Sign up for a free 30min 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!

Particles math problem

  1. Jan 29, 2009 #1
    1. The problem statement, all variables and given/known data

    A particle leaves its initial position x0 at time t=0 moving in the positive x direction with speed v0 but undergoing acceleration of magnitude a in the negative x direction. Find expressions for 1) the time when it returns to its initial position and 2)the speed when it passes that point.

    2. Relevant equations

    3. The attempt at a solution
    Wouldn't it stop first before returning to its initial position? Is it relevant that 2(xf-x0) is the total distance to return?
  2. jcsd
  3. Jan 29, 2009 #2


    User Avatar
    Science Advisor
    Homework Helper

    Re: particles

    Sure it will stop before returning. No, the total distance isn't terribly relevant. Unless you know a formula that involves it. You left the "Relevant Formulas" section blank. You know the second derivative of x(t) with respect to t is the acceleration 'a'. Can you either i) integrate that equation or ii) do you know a formula for the displacement of a particle under uniform acceleration?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Particles math problem
  1. A Math Problem (Replies: 14)

  2. Financial math problem (Replies: 3)