M2 Jan 2012 Edexcel - Post exam discussion - Solutions and paper in first post

I did the exact same thing! Frustrating But the rest of the answers look familiar, so I hope I'll still be okay

I really hope you guys are wrong about the high grade boundaries! I think I got something like 60 (but I couldn't remember all of my answers so I tended to mark myself down rather than up) and I was feeling pretty good about it until people started talking about the A boundary being at 68/69/70

This is the kind of paper where UMS scores really aren't fair as all the super clever people take these modules and so the poor only-slightly-clever people end up with D's!

Arsey would I lose marks for not working out the magnitude of the acceleration. 2 b) I just left it as (2i - 24j) ms^-2

What about 4)b) where I put 44 degrees because I've often seen it to the nearest degree in past papers?

should be fine

Phoebe

I have read this about 3 times and I can not work out what you mean.

Integrating v = 2ti - 3t^2j to give s = t^2i - t^3j will be M1 A1 regardless of c

substituting in t = 1 (into your equation for a) and setting it equal to -4i + j will be M1

correctly working out s = (t^2 - 5)i + (2 - t^3)j will be A1

Subbing in t = 4 to give s = 11i - 62j will be A1

I doubt they will allow any follow through marks for the final two accuracy marks.



How many marks do you think you got?


This is the problem with the paper, it doesn't differentiate between the good and the very good students.

Think its time for a new syllabus

I heard a new one's coming in 2014 or something.

Where did you hear that?

I phoned up Edexcel and one of their consultants told me that they are considering launching a new specification in late 2013 to be implemented hopefully from 2014 onwards. This phonecall happened in about September/October 2011.

When he said '2013', I was a little worried because I'll still be in school in 2013, so was wondering if it would affect me. He assured me that it wouldn't because it isn't going to take effect in 2013, and even if it did they'd still run the old course as a legacy for people to sit for a couple of years.

Right I see. It'll be interesting to see how they'll create a 'new' specification. The last time they changed things was in 2008, and that was just a reissue of the old one with minor changes to Decision and Further Pure. Core can't really be affected because all the exam boards have to cover the same things in that area. Maybe they'll extend some applied unit series, like bring in an M6, M7, or even merge existing ones.

hey arsey,

question 3b...added 75gsin5 to 75gsin5+20...my value of AB wrong...i got the correct loss in K.e. and but i equated it to the wrong values for resistive force..how many marks do i lose?

Thanks arsey... Basically i got v = 2ti - 3t^2j to give s = t^2i - t^3j and then i subbed in t = 1 BUT this came out as (wrongly) -...1^2 -1^3 so i forgot the i and j... however i set this '0' answer equal to -4i + j to give C = -4i+ j.. so do you reckon i droped 2 or 3 of the 5 marks? This could be the different between and A and A* arghhh..

Thanks again..