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!

Simple physics 11 problem ?

  1. Dec 16, 2008 #1
    1. The problem statement, all variables and given/known data

    A 15.0 g object initially moving to the right at 30.0 cm/s collides with a stationary 45.0 g object. After the collision the 45.0 g object is moving to the right at 15 cm/s.
    what impulse does the 45.0 g object apply to the 15.0g object during collision?

    2. Relevant equations

    F[tex]\Delta[/tex]t = m[tex]\Delta[/tex]v

    3. The attempt at a solution

    I tried:
    F[tex]\Delta[/tex]t = m[tex]\Delta[/tex]v
    = (15.0g)(15.0cm/s)
    = 225 N x s
    but the answer is 6.75 x 10^-3 N x s
    help ?
     
  2. jcsd
  3. Dec 16, 2008 #2

    Doc Al

    User Avatar

    Staff: Mentor

    How did you determine the change in velocity of the 15.0g object?

    (Also: Use standard units. Convert g to kg; cm to m.)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Simple physics 11 problem ?
  1. Physics 11 problem 16 (Replies: 15)

  2. Physics 11 problem 19 (Replies: 7)

  3. Physics 11 problem 10 (Replies: 3)

Loading...