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: Momentum and Energy

  1. Apr 29, 2008 #1
    An isolated system is initially at rest. Is it possible for parts of the system to be in motion at some later time? Explain.

    When driving a golf ball, a good 'follow-through' helps to increase the distance of the drive. Explain why this technique allows you to hit the ball farther.
     
  2. jcsd
  3. Apr 29, 2008 #2

    G01

    User Avatar
    Homework Helper
    Gold Member

  4. Apr 29, 2008 #3

    rcgldr

    User Avatar
    Homework Helper

    This is false, after the ball leaves the club after the collision, it doesn't matter what the golfer does with the club.
     
  5. Apr 30, 2008 #4
    Initial momentum is zero, which is a vector quantity.
    certainly one part can have motion after some time, considering the fact that you are not restricting the motion of the other part.
    example: BOMB explosion
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook