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!

Help with Acceleration

  1. Sep 7, 2009 #1
    1. The problem statement, all variables and given/known data
    The figure shows the motion diagram, made at two frames of film per second, of a ball rolling along a track. The track has a 3.0m-long sticky section.
    http://img30.imageshack.us/img30/2278/screenshotkh.png [Broken] <-- The graph with the coordinates
    2. Relevant equations

    3. The attempt at a solution
    a=3-2/2-1 = 1 + 3.96

    I've tried a bunch of ways but could not get it
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Sep 7, 2009 #2
    You are asked to figure out the acceleration of the ball in the sticky section of the track.

    (1) First determine the initial speed [itex] V_i [/itex]?
    (2) Then determine the final speed [itex] V_f [/itex]?
    (3) What is the distance [itex] x [/itex] over which this change in speed occurs?
    (4) Have you learnt a formula which relates these three quantities? The formula
    I am thinking of is [tex] V_f^2 - V_i^2 = 2 a x [/tex]. Then use this formula and
    and ask your teacher if it is legitimate to do so.
  4. Sep 7, 2009 #3
    Ok, I got it. Thanks!
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook