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    Does anyone have a full definition of what an inertial frame actually is and/or the mark scheme for unit8 AQA Physics (Spec A) Jan 2004?
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    I know it, but couldn't define it very well... perhaps a set of observations made from a viewpoint travelling at constant relative velocity?
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    that's exactly the problem I've got - I know what it's on about, but if I got a question syaing "what is an inertial frame?" then I just wouldn't know (other than Newton's 1st applies)
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    Wikipedia is so great

    http://en.wikipedia.org/wiki/Inertial_frame
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    it's a non-accelerating frame.

    F=ma holds in an inertial frame
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    cheers everyone

    I've got the mark scheme too now, so double woo!
 
 
 

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