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: Mechanics problem

  1. Apr 30, 2007 #1
    1. The problem statement, all variables and given/known data

    A machine gun is mounted in a car resting on a frictionless horizonta surface.The mass of the car+gun system is M at a particular instant.At the same instant the gun is firing bullets of mass m,n per unit time.u and v are the velocity of bullet and car w.r.t. the floor.Find the accleleration of the car.

    2. Relevant equations

    M(dv/dt)=F-w(dm/dt) where w is the relative velocity

    3. The attempt at a solution

    I got the following answer:Please check if I am correct
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted