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!

Car Collision Problem - Halp!

  1. Feb 5, 2012 #1
    1. The problem statement, all variables and given/known data
    A red car with speed 30.0m/s and a blue car with speed 25.0m/s are initially 200m apart and heading toward each other on a one-liner road. The brakes on the red car can produce an acceleration of 3.40m/ss while the breaks on the blue car can produce an acceleration of 3.25m/ss.
    A) Do the cars collide? If yes, where?
    B) If they collide find speed of each car upon collision.


    2. Relevant equations
    I found out both cars' locations if the final velocity is 0, I also found where the time it takes each car to have a velocity of 0. The red car reaches v=0 at 132m and the blue car reaches v=0 at 103.8 m. So clearly they crash because 103.8 < 132. How do I find out WHERE they crash?

    3. The attempt at a solution
    ^
     
  2. jcsd
  3. Feb 5, 2012 #2
    Write down the distance each car goes as a function of time, X_r and X_b. You also know X_r + X_b = 200 (with a particular choice of coordinates for each car) at t = t_collision.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Car Collision Problem - Halp!
  1. Car collision problem (Replies: 5)

Loading...