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    Hi, earlier on, I was doing this mechanics question in the exam. Now the problem is not really how to get the answer, but more what I should use for the answer. Let me explain, for question 2. part c) my answer was 13.75.I rounded this to 3 S.F, so 13.8 was my final answer. Now for part d) however, it didn't specify to use my answer from my last question, but it seemed the most appropriate way. This is the part where I wasn't sure whether to use my rounded answer or my non-rounded answer from part c) in the working for part d). Eventually after much contemplation, I decided to go with the non-rounded answer, which is 13.75. I am worried that I won't get the answer. Can anyone tell me what the examiners are like with this sort of stuff? Are they understanding people? Do they let you off things like these and do they have alternative answers in the mark scheme? Any help will get you +rep, thanks.

    This was an AQA question btw.
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    (Original post by jdude22)
    Hi, earlier on, I was doing this mechanics question in the exam. Now the problem is not really how to get the answer, but more what I should use for the answer. Let me explain, for question 2. part c) my answer was 13.75.I rounded this to 3 S.F, so 13.8 was my final answer. Now for part d) however, it didn't specify to use my answer from my last question, but it seemed the most appropriate way. This is the part where I wasn't sure whether to use my rounded answer or my non-rounded answer from part c) in the working for part d). Eventually after much contemplation, I decided to go with the non-rounded answer, which is 13.75. I am worried that I won't get the answer. Can anyone tell me what the examiners are like with this sort of stuff? Are they understanding people? Do they let you off things like these and do they have alternative answers in the mark scheme? Any help will get you +rep, thanks.
    They'll give a range of answers to mark from.
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    They do? because from looking at the exam papers so far, I haven't seen any marks for answers within a range :/
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    (Original post by jdude22)
    They do? because from looking at the exam papers so far, I haven't seen any marks for answers within a range :/
    Yeah, they will and I would do exactly what you do. I guess it may depend on which board but normally the marker will use some discression
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    I always work with the unrounded values, and only round in the final answer.

    BTW often instead of a range, they seem to say ' 14.8 awrt'

    Meaning 14.769212 is fine. (awrt = anything which rounds to)
 
 
 
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Updated: January 15, 2010
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