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: Calculate distance given accleration, initial & final speed

  1. Mar 21, 2010 #1
    dleted due to error
    Last edited: Mar 21, 2010
  2. jcsd
  3. Mar 21, 2010 #2
    The equation you've used is finding time, not distance.

    The equation to use in this case is:

    [tex]v^2 = u^2 + 2as[/tex]

    Where v is the final speed, u is the initial speed, a is the acceleration and s is the displacement.

    Rearrange this to find s.

    Remember that the driver is decelerating, so the acceleration is -2.68 ms^-2.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook