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!

Acceleration and displacement question?

  1. Nov 15, 2009 #1
    acceleration and displacement question????????

    a turtle is moving with a constant acceleration along a straight ditch. a person starts a stopwatch as the turtle passes a fence post and notes that it takes him 10s to reach a pine tree 10m farther along a ditch. as the turtle passes the pine tree, his speed is 1.2m/s.

    how far was he from the fence post when he started from rest??
     
  2. jcsd
  3. Nov 15, 2009 #2
    Re: acceleration and displacement question????????

    we know this equation:
    V^2 = V(initial)^2 + 2a(displacement)

    V initial = 1.2-10a

    I think you can solve the rest of the problem. There might be a nicer solution to this, but this is the best I got.
     
  4. Nov 15, 2009 #3
    Re: acceleration and displacement question????????

    That's the wrong formula. You are not given a value for acceleration. You are given a value for time.
     
  5. Nov 15, 2009 #4
    Re: acceleration and displacement question????????

    1.2^2 = (1.2-10a)^2 + 20a

    Solve for a.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook