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!

Homework Help: Which block falls off the table first? - Elastic collision

  1. Mar 13, 2013 #1
    1. The problem statement, all variables and given/known data

    A 2kg block is resting on a frictionless table. It is hit, head on, by a 1kg block heading at 4 m/s. The larger block is sitting 3m from the edge of a 5m long table. The collision happens with the smaller block's distance being 2m from the table and the larger blocks d = 3m from edge. Which block will fall off the table first? It's an elastic collision.

    2. Relevant equations

    I used p=mv and 1/2mv^2

    3. The attempt at a solution

    I was able to fine the momentum before, but I cant solve for the velocities.
  2. jcsd
  3. Mar 13, 2013 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Education Advisor

    Show your work.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted