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M1 OCR (Not MEI) Exam - 9/06/2015

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My teacher said they haven't specified so they are writing to the exam board to let them know. However he may have missed the "above the horizontal" phrase too


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Original post by xsanda
Xsanda's solutions:

Falling question
1i) v=28 [2]
1ii) s=6.384 [2]
1iii) t=0.598 [3]

Collision question
2i) u=6 [4]
2ii) m=0.2 [4]

Cycling question
3i) 20km, 5hrs [3]
3ii) 7 hrs [3]
3iii) 50km [2]

110° tick
4i) 9.74N, 35.4° [6]
4ii) 10.3N [1]
4iii) 54.6° [2]

θ force
5i) 1.04 [3]
5ii) 1.06 [3]
5iii) a=0 [3]
5iv) a=0 [2]

Coalescing
6i) v=68 [4]
6ii) s=78 [4]
6iii) k=132 [1]
6iv) v=7 [5]

Prism
7i) a=0.7 (show that), T=1.68 [5]
7ii) v=1.26 [2]
7iii) -a = 0.9 [2]
7iva) T=1.2 [3]
7ivb) Fr = 1.12 [3]


I was going to do a mark scheme, but no need; all spot-on Xsanda.
Reply 662
Avatar for ms8061
ms8061
5
Original post by kkeasylearning
For everyone debating question 5 whether it was a push or a pull, the question said "above the horizontal".

This is what above the horizontal means
Attachment not found


And this is what below the horizontal is ie a pushing force in the case of this question

ImageUploadedByStudent Room1433923529.182977.jpg

Therefore (I believe) it can only be a pulling force due to the phrasing of the question.
It seems lots of people have made the same mistake however, so OCR might decide to put some MR marks on the markscheme, so you could still get half or more of the marks if you otherwise were correct in your working. Perhaps not though.


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if you had a force acting into the bottom corner of the block itd be a pushing force but still be right
Hey guys is there an ocr c3 thread one of you kind people could link me to (non mei). Thanks in advance!!!!!!!
However there is nothing on the specification about this, I checked today, therefore I think they'd have to give full marks for both, you can't phrase a question based on terminology that's nowhere on the spec surely
Opinions on grade boundaries people?


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Reply 666
Avatar for GM16
GM16
1
Original post by ARotchell
Opinions on grade boundaries people?


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I think around 61 for an A


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hopefully we all did well:smile:
Reply 668
Avatar for Bobbert
Bobbert
Has anyone got some answers?

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