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!

Need a bit of help with j-hat and i-hat in a collision

  1. Feb 29, 2004 #1
    Hey there, I'm lost with this one:

    Now, I know how to go about calculating the velocity of the center of mass (v(cm)= m(1)V(1)+m(2)V(2)/m(1)+m(2)

    The thing that throws me off is the j-hats and i-hats. How do I come out with a vector number? I thought of the pothagarem(sp?) therom, but decided that couldnt work. Any ideas? Thanks.
  2. jcsd
  3. Feb 29, 2004 #2
    u mean pythagoras Theorem , it should work
  4. Mar 1, 2004 #3


    User Avatar
    Science Advisor

    Treat "i-hat" and "j-hat" as two separate problems. Then put them back together into the "momentum vector" with i and j components.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Need a bit of help with j-hat and i-hat in a collision