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 questions

  1. Jun 13, 2013 #1
    1. The problem statement, all variables and given/known data
    A pellet is fired from a gun. the Pellet is fired horizontally into the a toy car, which has modelling clay attached to it. The pellet remains in the clay as the car moves.

    The car travels a distance of 0.069M before coming to a rest at 1.3s

    show that the speed of the car immediately after being struck by the pellet was about 1 m/s


    2. Relevant equations

    No idea, but it also asks in part 2, the assumption you made in order to apply the equation.


    3. The attempt at a solution

    my attempt was using the kinematic equations but I reached a value of 0.1 m/s which is no where near 1m/s
     
  2. jcsd
  3. Jun 13, 2013 #2

    PhanthomJay

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    using the kinematic equations is the correct approach. I also get your answer. Could be a typo in the book answer.
     
  4. Jun 13, 2013 #3
    It cannot be, the value is way off.
     
  5. Jun 13, 2013 #4
    Never mind, you are indeed correct and I apologise, I just realised I read the value for distance differently, the kinematic equations gave a value of 1.06m/s which is good enough for me.

    However now I have to state an assumption in order to apply the equation I used.
     
  6. Jun 14, 2013 #5

    PhanthomJay

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    The usual assumptions about under what conditions momentum is considered, you might think of others.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



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

  2. Momentum questions (Replies: 9)

  3. Momentum Question (Replies: 5)

  4. Momentum question (Replies: 5)

Loading...