M1 Jan 2012 Edexcel Post-Exam discussion - Solutions and Paper in first post
Maths exam discussion - share revision tips in preparation for GCSE, A Level and other maths exams and discuss how they went afterwards.
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Re: M1 Jan 2012 Edexcel Post-Exam discussion - Solutions and Paper in first post
7c and 7d I equated the wrong so i got a time of 2. I followed through with this answer onto question d . Will I get any marks do you think? And on 8c I ended up getting an acceleration of 2, i put it in suvat and did the same as you. Is there any hopes for marks on that? Everything else I got right aswell
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Re: M1 Jan 2012 Edexcel Post-Exam discussion - Solutions and Paper in first posthe has taken into account the component of the weight. That would be 4gsin30 =2g. He added it to the friction on his diagram.(Original post by When you see it...)
For 8 (c), did you take into account the parallel component of the object's weight?
Also, just out of interest, how did you get hold of this paper? -
Re: M1 Jan 2012 Edexcel Post-Exam discussion - Solutions and Paper in first postthats a comfortable A i'd say..82/83/84 UMS ish(Original post by nereik6794)
FML managed to lose 2 marks on 1 part a... But I did get 65/75 overall, this enough for an A? -
Re: M1 Jan 2012 Edexcel Post-Exam discussion - Solutions and Paper in first post
for q4, how many marks would I get for part b if I didn't include gravity?
got 7 part c and d wrong, made the i componants equal rather than j..
for q8 im sure i got 0.5 something for coffefficent of friction and a distance of more than 100m.. -
Re: M1 Jan 2012 Edexcel Post-Exam discussion - Solutions and Paper in first postWould I lose marks for showing two methods for a question even though they both get me the same answer.(Original post by Arsey)
Very easy I thought
For question 1b, I used the idea that Impulse on Q = -(Impulse on P) to give me the mass (as Newtons 3 law states every force produces an equal and opposite reaction). But then I realised that it may not be the one they give in the mark scheme, so underneath I wrote "Method 2" and solved it using the conservation of momentum principle.
Would I still get 3 out of 3 marks for that question? -
Re: M1 Jan 2012 Edexcel Post-Exam discussion - Solutions and Paper in first postNo marks lost as its 2 sig figures.(Original post by 94george94)
Arsey, for part 8b, if you rounded Mu to 0.73 instead of having 0.726 how many marks do you think you would lose? -
Re: M1 Jan 2012 Edexcel Post-Exam discussion - Solutions and Paper in first postNo marks lost as long as you got mass =1500.(Original post by geditor)
Would I lose marks for showing two methods for a question even though they both get me the same answer.
For question 1b, I used the idea that Impulse on Q = -(Impulse on P) to give me the mass (as Newtons 3 law states every force produces an equal and opposite reaction). But then I realised that it may not be the one they give in the mark scheme, so underneath I wrote "Method 2" and solved it using the conservation of momentum principle.
Would I still get 3 out of 3 marks for that question? -
Re: M1 Jan 2012 Edexcel Post-Exam discussion - Solutions and Paper in first postWhat's with the question marks next to Q4's mark quantities, out of interest?(Original post by Arsey)
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Re: M1 Jan 2012 Edexcel Post-Exam discussion - Solutions and Paper in first posti am guessing 4 marks for getting a the two time parts. (27/7) and (3/7)(Original post by 94george94)
Final question, for the time above 6.6m I misread my handwriting and did (27/7)-(3/7) rather than (22/7)-(23/7), my working is exactly the same as Arsey's up until that point, how many marks out of 6 would I lose? -
Re: M1 Jan 2012 Edexcel Post-Exam discussion - Solutions and Paper in first post
Hahahaha I messed up 1b by taking 3m from both sides, what a retard.
And for the very last question, I originally had an acceleration of -11.whatever and then I redid it and got -1.26
Oh well, should be 67/75 anyway, a big improvement over about 37/75 last time.
completely left out 'g' for the moments question. how many marks would i lose?