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# Unofficial M1 Mark Scheme?

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1. For question 1b, I didn't rearrange the equations like this p = (400+15t)i + (20t)j
q = (20t)i + (800-5t)j, I left it in the original r=r0 +vt form. Will I lose any marks? If so roughly how many?
2. (Original post by lucabrasi98)
For question 6 i accidentally used 2-d for the second equation instead of 4-d. Which led to me getting different values for M and d. That was the only error in my working out. How many marks would i lose? I'm guessing the A1 marks and a B1 mark?

Is there any sort of follow through marks or did me using (2-d) ruin everything?
I did the same.

I'm hoping we only lose 2 marks but who knows?
3. I took the about A&B and still got the right answer
4. (Original post by Katiaa96)
My teacher told me today that the examiners should mark any correct answer on the paper, they told us not to cross anything out if we have two answers as the correct one will be marked. I hope this is true because I did exactly the same thing
Love you!
5. For question 6, I obtained a value for d to be 1.1m Consequently, the mass of the brick I obtained for M was 36kg.
For the coefficient , I found the value to be 0.734 as opposed to 0.727, which I'm assuming was more to do with a rounding error from one of the steps in the solution as opposed to a incorrect method.
So, how many marks do you think I've lost for each question?

6. This is how I worked out moments, different method but still works, was stressed out that I dropped all 7 marks because I forgot my answer but remembered that I took 2 moments around A and compared the upwards and downwards forces, luckily it comes out with correct answer. This method is slightly more long winded than that in the mark scheme because you have to get rid of 'R' first

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7. I worked out that I made mistakes on questions 3 and 6:
On question 3 I did everything right, got 3.5 ms^-1 but forgot to take into account the fact that it was in the negative direction:
I = 0.4(3.5 - 4)
I = 0.2Ns x
I'm thinking I'll have lost two marks for this? What you think?
On question 6 for some crazy reason I did everything right then decided that d = 5/6 rather than 6/5 and that m = 48 kg
How many marks do people think I'll get for these questions? I'm trying to get 90 UMS overall

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8. For o6 I accidentally thought frictuion was 1/5

And thus all the answers were wrong. Would I get any marks for using the correct method. Like I used f=ur and I also used suvat but due to having the wrong friction I also got the wrong acceleration and accidentally got my speed 4.432.

Will I get any marks? Pls respond
9. (Original post by KloppOClock)
well that's exactly what I thought and did, but the majority of everyone here has done it the other way so I'm assuming we are definitely wrong. We probably both misread or misunderstood the question? It can happen.

Anyway we would only lose one mark for doing what we did based on the Gold 5 Paper.

M1 A0 A1(ft)
people on here have got it wrong the question was the way i said it as teachers at our school got hold of paper and the question was what i said so i think u may need to do that question again as its different
10. Thanks bro. And btw for 8b to state the direction would drawing out this get atleast a mark?

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Attached Images

11. So, because I wrote 15.45N as the answer for question 2, and didn't round to 2.s.f or 3.s.f, I'm going to lose a mark?
12. (Original post by fastandfurious)
So, because I wrote 15.45N as the answer for question 2, and didn't round to 2.s.f or 3.s.f, I'm going to lose a mark?
Yeah I did the same, TBH I think it seems silly to mark it as wrong when it is actually more accurate.
13. Hi Guys, from what I can tell there were only three mistakes I made:

Question 2b I wrote the final answer as 15.45 rather than to 3.s.f

Question 3 I didn't divide the uR by 0.4, so i got 2.89 instead of 3

Question 8 I had the Resultant acting 45 degrees upwards instead of down

Roughly how much would i loose for this?

Thanks
14. (Original post by Katiaa96)
My teacher told me today that the examiners should mark any correct answer on the paper, they told us not to cross anything out if we have two answers as the correct one will be marked. I hope this is true because I did exactly the same thing
That's simply incorrect. I don't know where your teacher heard that from. The right answer being somewhere on the page doesn't negate incorrect working out or also writing down the wrong answer. You won't get full credit
15. (Original post by TheDove)
Yeah I did the same, TBH I think it seems silly to mark it as wrong when it is actually more accurate.
you shouldn't because it will probably say in the mark scheme '15.5 or better' better being more accurate

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16. (Original post by pineneedles)
you shouldn't because it will probably say in the mark scheme '15.5 or better' better being more accurate

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Thanks pineneedles, also what do you roughly think an A will be, 62?
17. (Original post by TheDove)
Thanks pineneedles, also what do you roughly think an A will be, 62?
Looking at the grade boundaries for the past six years that doesn't seem unreasonable. I think it'd be 62 - 64, yeah

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18. (Original post by youreanutter)
people on here have got it wrong the question was the way i said it as teachers at our school got hold of paper and the question was what i said so i think u may need to do that question again as its different
i did the the other way as well, originally I did put that as my answer however i got a crap ton of people spamming my inbox telling me it was wrong, so I'm just assuming that we're wrong. If you could provide a photo of the question then that would definitely clear up any mistakes, or even better if you asked the teacher what the correct answer was.
19. (Original post by OnomeO)
For question 1b, I didn't rearrange the equations like this p = (400+15t)i + (20t)j
q = (20t)i + (800-5t)j, I left it in the original r=r0 +vt form. Will I lose any marks? If so roughly how many?

none
20. (Original post by pineneedles)
you shouldn't because it will probably say in the mark scheme '15.5 or better' better being more accurate

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when using an approximation such as G your answer has to be either to two or three s.f or in terms of g or you will lose an A1 mark

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