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!

Momentum question

  1. Oct 30, 2007 #1

    klm

    User Avatar

    In a ballistics test, a 25.0 g bullet traveling horizontally at 1100 m/s goes through a 30.0 cm-thick 450 kg stationary target and emerges with a speed of 900 m/s. The target is free to slide on a smooth horizontal surface.

    How long is the bullet in the target?
    i tried to use this equation : t = d/v_avg

    900-1100 / 2 = -100 = vavg
    .3=-100 t
    t= .003
    but it is saying that it is incorrect. can someone tell me what i am doing wrong?
     
  2. jcsd
  3. Oct 30, 2007 #2

    rl.bhat

    User Avatar
    Homework Helper

    Using kinematic formula can you find the retardation produced in the block?
     
    Last edited: Oct 31, 2007
  4. Oct 30, 2007 #3

    klm

    User Avatar

    um i guess not then...
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Momentum question
  1. Momentum Question (Replies: 4)

  2. Momentum questions (Replies: 4)

  3. Momentum questions (Replies: 9)

  4. Momentum Question (Replies: 5)

  5. Momentum question (Replies: 5)

Loading...