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 and speed

  1. Nov 9, 2008 #1
    1. The problem statement, all variables and given/known data
    A 1500kg car has the same momentum as a 2500kg truck moving at 15 m/s.
    How fast is the car moving?
    A. 15 m/s
    B. 25 m/s
    C. 35 m/s
    D. 40 m/s
    E. 50 m/s

    2. Relevant equations
    p = mv


    3. The attempt at a solution
    Truck = (2500kg)(15m/s) = 37500
    Car = v=p/m = 37500/1500kg = 25m/s

    This is what I answered but it says it wrong.
    Any help would be appreciated.
    Kevin
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Nov 9, 2008 #2
    You're not wrong unless you're leaving out some information.
     
  4. Nov 9, 2008 #3
    I've got everything. We took a test and get to retake it. I missed this one by putting 25 m/s. I think it's right. I emailed my instructor.
    Thanks,
    Kevin
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Momentum and speed
  1. Momentum unknow speed (Replies: 2)

Loading...