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    (Original post by OllieGCSEs)
    This answer is more appropriate for seatbelts and airbags i think - crumple zones are designe to absorb some of the energy from a collision


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    I don't know, I made these notes around the mark scheme as this question came up in 2010 sometime
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    (Original post by yodawg321)
    I don't know, I made these notes around the mark scheme as this question came up in 2010 sometime
    A seatbelt question came up in May 2010, maybe you've confused the two - i'm not saying what you mentioned is wrong, however it's a perfect answer for an airbag or seatbelt question, so you might want to throw in 'absorbs energy' just to set it aside from the airbag/seatbelt answers


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    How do you define the joule and watt?
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    Any videos for this module? Anything similar what examsolutions.net does for maths but for physics mechanics?
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    (Original post by rfka)
    How do you define the joule and watt?
    The joule is the unit of energy and is the work done when a force of one newton moves its point of application by one metre. i.e. 1J = 1N *1m

    A watt is a measure of power (work done per unit time) and so 1W = 1J/1s or in words 1 Watt is when 1 joule is expended per second.

    Added stuff for Ogley
    Attached Files
  1. File Type: docx C3 Revision.docx (38.3 KB, 189 views)
  2. File Type: docx S1 Rev.docx (332.0 KB, 91 views)
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    Does anyone have any model answers for car safety chapter?
    Such as crumple zone, seat belts, what effects braking distance etc. ?
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    (Original post by OllieGCSEs)
    This answer is more appropriate for seatbelts and airbags i think - crumple zones are designed to absorb some of the energy from a collision


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    that's pretty much what the answer says.... seatbelts are mostly about keeping you in the car so that you don't hit the windshield airbags are designed to slow you down gradually
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    (Original post by yodawg321)
    Where does it say about series and parrallel in the spec? Can't find anything about it

    http://www.ocr.org.uk/Images/81024-specification.pdf
    I'm not sure. I remember seeing a few past questions on it and we always did an experiment on it in class. I think it is on the specification somewhere, where though is a mystery. Just make sure you know it..
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    (Original post by ChloeB43)
    I'm not sure. I remember seeing a few past questions on it and we always did an experiment on it in class. I think it is on the specification somewhere, where though is a mystery. Just make sure you know it..
    Under 1.3.4 it says:

    Students can carry out experiments to find the relationship between force and extension for a single spring, springs in series or parallel, rubber, polythene strip, etc.

    It doesn't say we need to understand to, but it is included.
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    (Original post by dakenSoren)
    Hmmm from some gentle stalking I think we have a quite a bit in common: programming, computers, chemistry, maths, further maths, gym
    You hoping to do CompSci or something at Uni?
    haha yeah or electronics engineering.
    it could be done though, i dont have the knowledge to do it
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    (Original post by dakenSoren)
    Here is those long word question answers
    i ****ing love you dude
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    (Original post by P!=NP)
    Any videos for this module? Anything similar what examsolutions.net does for maths but for physics mechanics?
    check the first page/post of the thread -.-
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    here you go *****ess
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  3. File Type: pdf Mechanics Definitions.pdf (313.8 KB, 169 views)
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    I've been revising almost daily for this exam. Why can't I revise today?!?!?!!?!?!?!?!? Help someone
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    So what do you need to know for the springs in parallel and in series?
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    What formulas are not given in the exam?
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    (Original post by Vorsah)
    What formulas are not given in the exam?
    look up the ocr A physics data sheet, you'll see what you're given



    does anyone know how to answer question 3)d)i)2) on june 2012?
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    (Original post by Kreayshawn)
    look up the ocr A physics data sheet, you'll see what you're given



    does anyone know how to answer question 3)d)i)2) on june 2012?
    mgsintheta=ma so a=mgsintheta/m ----- a=gsintheta -- sintheta=a/g you just worked out a in the previous part and its just plug and chug from there
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    (Original post by blackstarz)
    mgsintheta=ma so a=mgsintheta/m ----- a=gsintheta -- sintheta=a/g you just worked out a in the previous part and its just plug and chug from there
    thanks that makes sense - mark scheme skipped putting "m" in either side of the equation so i was confused as to how they got there
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    Just read the examiners report, nobody got 60 in this exam in January! :eek:
 
 
 
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