Newton’s Three Laws of Motion are a landmark achievement in physics. They describe how all objects move. Unfortunately most people do not really understand Newton’s Laws because they have pre-existing ideas about the way the world works. This film is about those pre-existing ideas. By recognizing what people are thinking, it becomes easier to describe the correct scientific concepts of Newton’s Three Laws and how they differ from this ‘intuitive physics’.

48 COMMENTS

  1. His first Incorrect law is really correct. An object with no forces is at rest. That doesn't mean it 'stops' in all reference frames.

  2. 1st law is incorrect becaouse a moving body doesnt stops if somthing doesnt make it to stop.
    2nd low is incorrect becouse a continouum force makes the object aclerate in the same rate. It is not constant "V" but it is constant "V/t" The example with the car is wrong becouse the resultant force gets low becouse higher the speed of the car higher is the anti -force of friction.
    The 3rd law is not scientificly well defined , it is wrong.

  3. This video is fantastic! I have never seen these misconceptions so eloquently phrased. It basically sounds like we're confusing forces with momentum.

  4. the example for number 2 didn't make any sense. like seriously, what? The only reason the car comes to a constant velocity is because of friction through air resistance mainly, which BALANCES the acceleration of the car's own thrust making it maintain a constant velocity. what were you even getting at!?!

  5. Because these laws are intentionally derived from observation where friction is unknown (much like Newton did, only with correct laws), they misrepresent what is happening because of the exclusion of friction. This makes me wonder how Newton was able to come up with his three correct laws since in his time friction was not understood by him or anyone else. Makes me love him even more.

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