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Thread: inetia of rest

  1. #1 inetia of rest 
    Forum Senior anand_kapadia's Avatar
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    We know that our earth revolves round the sun at avery high speed. Now consider a stationary car. Now if the earth is moving then the car should due to inertia of rest move in the opposite direction.


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  3. #2 Re: inetia of rest 
    Forum Isotope Zelos's Avatar
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    Quote Originally Posted by anand_kapadia
    We know that our earth revolves round the sun at avery high speed. Now consider a stationary car. Now if the earth is moving then the car should due to inertia of rest move in the opposite direction.
    why should it? it got the same speed as the earth so therefor it doesnt seem to move at all.

    32km/s aint that fast


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  4. #3  
    Forum Senior anand_kapadia's Avatar
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    How did the car got the same speed it was stationary.
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  5. #4  
    Forum Ph.D. Nevyn's Avatar
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    the Earth and all things on the earth are travelling at the same speed, it is just our perspective that thinks the car is stationary when it is in fact moving
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  6. #5  
    Forum Senior anand_kapadia's Avatar
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    Yes is it that all the things in the earth are moving due to the same sun's gravitational power as the earth is.
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  7. #6 Motion 
    Forum Professor leohopkins's Avatar
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    I think I know what you are trying to say. If so your answer is gravity. The earths gravitational pull makes sure that everything on the earth moves with it.

    It is a bit like saying when you are in a car and you drop something why does it not fly backwards due to inertia ? It doesnt because everything in the car including the air molecules are moving at the same speed as the car. To complicate matters, to a "stationary" outside observer, the thing you have dropped would appear to not drop straight down but to drop on a slope. This is all due to relativity and frames of reference.
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  8. #7  
    Forum Senior anand_kapadia's Avatar
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    Ya you got me.
    Thanks
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