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: Momentum Problem involving projectile.

  1. Feb 7, 2009 #1

    A 5.6 g experimental dart is fired into a block
    of wood with a mass of 24.3 g. The wood
    block is initially at rest on a 2.5 m tall post.
    After the collision, the wood block and dart
    land 2.7 m from the base of the post.
    Find the initial speed of the dart. Answer
    in units of m/s.

    Equations I used were: delta Y equation, Velocity equation, and the momentum formula.

    I solved for time and got .714 seconds. Then I found Velocity=3.78. Then I get lost and dont know what to do next.
  2. jcsd
  3. Feb 7, 2009 #2

    Tom Mattson

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    It would be a lot easier for us to show you what to do next if you post what you did first. That way we don't have to solve the problem from scratch to see if your numbers are correct.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook