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Physics LibreTexts

4: Linear Momentum

  • Page ID
    • 4.1: Repackaging Newton's Second Law
      Our only experience with Newton's second law is as a description of the reaction of an object's velocity to a force. Here we take a look at the second law in a new light that we will soon find useful.
    • 4.2: Center of Mass
      We discussed of center of mass in the context of Newton's second law without going into detail about what it is. It's now time to remedy that.
    • 4.3: Momenta of Systems
      The power of our repackaging Newton's second law in terms of momentum starts to become clear when we apply it systems of objects.
    • 4.4: Momentum and Energy
      We now have two physical quantities that exhibit conservation laws: energy and momentum. Here we look at their interplay, and get new insight into the work-energy theorem.
    • 4.5: Collisions
      Momentum conservation is especially well-suited to dealing with collisions, because the forces between the colliding objects (which are typically quite complicated) can be ignored when it comes to momentum conservation of the system.
    • 4.6: Problem Solving
      Let's see how we can apply momentum conservation to some classic problems.

    Thumbnail: A pool break-off shot. Image used with permission (CC-SA-BY; No-w-ay).