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: Impulse and Momentum of two cars

  1. Dec 31, 2009 #1
    1. The problem statement, all variables and given/known data
    Two identical cars (m = 1350 kg) are traveling at the same speed of 25.0 m/s. They are moving in the directions shown in the drawing. What is the magnitude of the total momentum of the two cars?
    img:http://higheredbcs.wiley.com/legacy...ics/sat_c07/sat_c07_q1_03/sat_c07_q1_03_1.gif


    A particle is moving along the +x axis, and the graph shows its momentum p as a function of time t. What is the magnitude of the net average force in regions A . Give your answer to two significant figures, e.g., 6.3 or 0.72.
    img: http://higheredbcs.wiley.com/legacy...ics/sat_c07/sat_c07_q1_08/sat_c07_q1_08_1.gif

    2. Relevant equations

    i don't know i'm confused.

    3. The attempt at a solution

    please help me.thank you very much!!
     
  2. jcsd
  3. Jan 1, 2010 #2

    rock.freak667

    User Avatar
    Homework Helper

    For the first one, try splitting the momenta into x and y components and then finding the resultant x and y momenta
     
  4. Jan 1, 2010 #3
    how can i split the momentum?hoho confused
     
  5. Jan 1, 2010 #4

    Borek

    User Avatar

    Staff: Mentor

    Momentum is a vector.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook