CK-12 Physical Science Concepts - For Middle School

(Marvins-Underground-K-12) #1

4.26. Newton’s Third Law http://www.ck12.org


Vocabulary



  • Newton’s third law of motion: Law stating that every action has an equal and opposite reaction.


Explore More


Watch this video about Newton’s third law of motion, and then answer the questions below.


http://www.youtube.com/watch?v=cP0Bb3WXJ_k


MEDIA


Click image to the left for use the URL below.
URL: http://www.ck12.org/flx/render/embeddedobject/82417


  1. Outline the action and reaction demonstrated by the astronauts in the video. Why does wearing the battery
    pack affect the motion of the astronaut named Alexander?

  2. Describe an example of Newton’s cradle.

  3. How do space vehicles apply action and reaction forces to blast off?


Review



  1. State Newton’s third law of motion.

  2. Describe an example of an action and reaction. Identify the forces and their directions.

  3. Explain why action and reaction forces are not balanced forces.

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