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!

Kinematics Moving Car

  1. Jun 1, 2016 #1
    1. The problem statement, all variables and given/known data
    A police car at rest, is passed by a speeder traveling at constant speed of 180 km/hr, take off in hot pursuit accelerating at 3.7 m/s². How far has the police car travelled to catch the speeder?

    2. Relevant equations
    I think we would use x = xo + vot + 1/2at^2


    (Or maybe V^2 = vo^2 + 2a(x-xo)?I am getting confused with which equations are relevant).
    3. The attempt at a solution
    I know xo is 0 because it is the start position at rest, vot is also 0 because its not moving. I am confused as to what I do with the 180 km/hr (I converted to 50 m/s)
     
  2. jcsd
  3. Jun 1, 2016 #2
    Definitely want to convert to m/s so that all the units are the same. I would also write out what you know about each car. Treat them as separate questions.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted