1 / 9

Notes: Chapter 11.3 Newton’s Third Law of Motion and Momentum

Notes: Chapter 11.3 Newton’s Third Law of Motion and Momentum. Newton’s Third Law of Motion. For every action force there is an equal and opposite reaction force. Called force pairs or action/reaction pairs

cecily
Download Presentation

Notes: Chapter 11.3 Newton’s Third Law of Motion and Momentum

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Notes: Chapter 11.3 Newton’s Third Law of Motion and Momentum

  2. Newton’s Third Law of Motion • For every action force there is an equal and opposite reaction force. • Called force pairsor action/reaction pairs • Force pairs do not act onthe same object, and thus don’t always have the same effect! • Movie: Newton's third

  3. Newton’s Third Law of Motion • The equal forces don’t always have the same effect, though. • According to the second law, F=ma. You will have different results depending on their masses.

  4. Momentum • An extension of Newton’s Third Law…tells what will happen from the action/reaction • Is equal to mass x velocity • p = mv • units have no name, just kg . m/s

  5. Momentum & Collisions • In collisions, momentum is conserved for the system(both balls), that is, it is the same for all the objects before and after the collision. • Called The Law of Conservation of Momentum

  6. Law of Conservation of Momentum • The system is both of the pool balls. If they have the same mass: • the total momentum before is mv + m0= mv • the total momentum after is m0 + mv = mv

  7. Law of Conservation of Momentum • What if the red ball has twice the mass of the white one? How fast will it move? • What if the white ball has twice the mass of the red one? How fast will it move?

  8. Momentum & Collisions • Elastic collision: objects hit each other and don’t stick together (bounce off) • Inelastic collision: objects hit each other and stick together • Momentum and Collisions • Conservation of Momentum

More Related