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!

Coefficient of Restitution

  1. Dec 4, 2003 #1
    Hi all,
    I am trying to find the coefficient of restitution in this example:
    Block m1=2 kg is pushed with initial velocity v=7 m/s for distance
    d = 4 meters towards a wall. Kinetic friction b/w floor and block is mK = 0.4. The block rebounds off the wall and travels distance
    d2 = 1 m before stopping.

    I think I should get the speeds of the block right before and after hitting the wall first but I am really lost on this one. Any help or teaching would be appreciated.
  2. jcsd
  3. Dec 5, 2003 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Yes, you need to find the speed of the block before and after the collision. First find the acceleration of the block, using Newton's second law. Then use the formula for accelerated motion to find the speeds:

    Vf2 = Vi2 + 2aΔX

    (This should really be in the homework help section!)
    Last edited: Dec 5, 2003
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Coefficient Restitution Date
Coefficient of Restitution problem Mar 10, 2017
Hoop and falling beads Aug 17, 2016
Displacement-Time Graph of a bouncing ball May 10, 2016
Coefficient of restitution Feb 20, 2016