Edexcel AS/A2 Mathematics M2 - 17th June 2016 - Official Thread Watch

Maetras
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#641
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#641
(Original post by Student403)
But that's a dimension, right? A value of height?

This is a positive constant
Yeah but you needed to use g to get it. So wouldn't it be 3sf max?
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Johnny98
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#642
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Right now Im just getting worried for no reason. Just want reinsurance. So was the question about power 800kg and sin theta was 1/20 isn't it?
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Linjingyu
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#643
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so r we wrong??? Because other people said it's fraction
(Original post by Linjingyu)
why did i get 15 for question 1 b?did anyone get different answer?
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1_2
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can someone please post a picture with the worked solution to question 4?? Thanks!
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Mathlete2198
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Hi guys,

So I'm supposed to be revising for C3, but I remembered all the questions from 1-6. I'm really sad, sorry. If anyone remembers Q7 holla at me.

I hope that these are right, but remember, I'm a student just like you guys!

If you have any questions let me know.
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CSLady
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#646
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(Original post by khaleesi98)
Ok so I've got 95 UMS in D2 from last year, and ~60 raw marks in both FP2 & M2.
Hoping an A* is still possible if I smash S2 ☺️ what do people think? x
In the exact same position ! Though I think my FP2 was slightly lower and M2 Slightly higher. I think it's still possible !


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Linjingyu
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#647
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Can anyone just tell me how r we meant to do for question 1b because I integrate from 0 to 3 and I got 15,but it seems like it's wrong!!!
They all got 11/3?? How???
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lydiawood
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#648
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(Original post by Squishy•)
When is Arsey releasing a model answers?
arsey has said he is no longer doing them because the exam board asked him not to
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hazzam
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(Original post by Linjingyu)
why did i get 15 for question 1 b?did anyone get different answer?
I got 15 too but what u had to do is work out the displacement between t=2 and t=3 because it said in the third second. Annoying question yes
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Student403
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(Original post by target21859)
Yeah but you needed to use g to get it. So wouldn't it be 3sf max?
I think I know what your friend's talking about but since the below MS allows 40/g for a positive constant (this was on a June 2015) question, and g is taken always as 9.8, then why would replacing g with the value they give for g suddenly give you the wrong answer?

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hazzam
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#651
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For the power question I got the right simultaneous equations but typed in the wrong numbers in the calculator coz I'm an idiot. So I got the values of P and R wrong even though my working is completely correct. How many marks would I lose?
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Johnny98
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(Original post by Mathlete2198)
Hi guys,

So I'm supposed to be revising for C3, but I remembered all the questions from 1-6. I'm really sad, sorry. If anyone remembers Q7 holla at me.

I hope that these are right, but remember, I'm a student just like you guys!

If you have any questions let me know.
Question 6 last part is the angle is below the horizontal. I think everything else is right
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ombtom
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(Original post by Mathlete2198)
Hi guys,

So I'm supposed to be revising for C3, but I remembered all the questions from 1-6. I'm really sad, sorry. If anyone remembers Q7 holla at me.

I hope that these are right, but remember, I'm a student just like you guys!

If you have any questions let me know.
Beautiful. Thank you.

Does 6 marks for question 3 seem particularly generous to you?
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1_2
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#654
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(Original post by CharpCharlie)
Attachment 551936551938 Question 7
Can you do the same for question 4 please?? The one about the centre of mass, that would really help
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Maetras
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(Original post by Student403)
I think I know what your friend's talking about but since the below MS allows 40/g for a positive constant (this was on a June 2015) question, and g is taken always as 9.8, then why would replacing g with the value they give for g suddenly give you the wrong answer?

Their value of g is accurate to 2sf (well for some parts of the world? For you to be able to leave it as a positive constant it would have to have g in the answer but since 30/7 has no g value and we used g in the suvat equations, we can only leave it to 3sf max. I'm hoping you're right because I left it as 30/7. What did everyone else leave it as?
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khaleesi98
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#656
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(Original post by Student403)
You need 3 A2 modules to average 90 (all those you have named count). D2 FP2 and M2 wouldn't get you an A* . You need to score quite high in S2 to get an A*
(Original post by CSLady)
In the exact same position ! Though I think my FP2 was slightly lower and M2 Slightly higher. I think it's still possible !

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Yeah I feel like S2 is going to need to be ~100 UMS but if the consensus is that it's still possible then that's good motivation 😊 good luck! x
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Student403
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(Original post by target21859)
Their value of g is accurate to 2sf (well for some parts of the world? For you to be able to leave it as a positive constant it would have to have g in the answer but since 30/7 has no g value and we used g in the suvat equations, we can only leave it to 3sf max. I'm hoping you're right because I left it as 30/7. What did everyone else leave it as?
I know noone irl who left it to a rounded answer. I know this obviously would be marked wrong in physics but I am 95% sure it's fine in maths
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Pyslocke
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(Original post by Mathlete2198)
Hi guys,

So I'm supposed to be revising for C3, but I remembered all the questions from 1-6. I'm really sad, sorry. If anyone remembers Q7 holla at me.

I hope that these are right, but remember, I'm a student just like you guys!

If you have any questions let me know.
For question 6 you say the angle was 73 degrees but your diagram makes it look like it was 73 degrees upwards. I think it was 73 degrees downwards because I think the vertical velocity at A was -10ms^-1
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Student403
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(Original post by khaleesi98)
Yeah I feel like S2 is going to need to be ~100 UMS but if the consensus is that it's still possible then that's good motivation 😊 good luck! x
Thanks - and you. Anything's possible!
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Maetras
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(Original post by Mathlete2198)
Hi guys,

So I'm supposed to be revising for C3, but I remembered all the questions from 1-6. I'm really sad, sorry. If anyone remembers Q7 holla at me.

I hope that these are right, but remember, I'm a student just like you guys!

If you have any questions let me know.
Was the com question in metres or centimetres? Would you lose a mark for using m as a unit instead of cm?
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