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!

A question about acceleration and displacement

  1. Sep 16, 2012 #1
    Hey everyone. I'm sort of new to the whole physics world (I'm doing it in highschol currently).
    I have one question that I apparently can't figure out.

    An object accelerates uniformly from rest. After 7.50s, the velocity is 53.2m/s north. What is the displacement?
    I first did d=tv and got 399m north. But I know that isn't right because I didn't use any acceleration. I know that a=7.09m/s^2 north, but I'm not sure how to factor that into the 399m...
     
  2. jcsd
  3. Sep 16, 2012 #2
    try this equation:

    d = v(0)*t + 1/2*a*t^2

    v(0) is the initial speed which in this case is zero so the equation simplifies to:

    d = 1/2*a*t^2

    Plug in the acceleration you found (which is correct) and the time (7.5s) and you should get the correct answer.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: A question about acceleration and displacement
Loading...