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# OCR M1 - 31st May 2012 :)

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1. Re: OCR M1 - 31st May 2012 :)
(Original post by Smiley Face :))
Hey, Could u helpme out please.
http://www.ocr.org.uk/download/pp_11...n_gce_4728.pdf

June 11
Q2 part 4
I have got that P will further go up by 0.036 M. I then added this to the 0.36M to get 0.396M.. In order to get the greastest height of P
However the markscheme has said that the greatest height of P is 0.756 M
I don't understand how and why they have got that value...
Just realised its already 0.36 M height... Then U add the 0.36M that it goes up when Q hits the floor and then add the 0.036 ...
2. Re: OCR M1 - 31st May 2012 :)
(Original post by Smiley Face :))
Hey, Could u helpme out please.
http://www.ocr.org.uk/download/pp_11...n_gce_4728.pdf

June 11
Q2 part 4
I have got that P will further go up by 0.036 M. I then added this to the 0.36M to get 0.396M.. In order to get the greastest height of P
However the markscheme has said that the greatest height of P is 0.756 M
I don't understand how and why they have got that value...
Initially it was 0.36m above the ground, when Q hits the floor it has gone a further 0.36m above the ground, the distance travelled while coming to rest is 0.036m, so the answer is 0.36+0.36+0.036=0.756m.
3. Re: OCR M1 - 31st May 2012 :)
(Original post by Smiley Face :))
Just realised its already 0.36 M height... Then U add the 0.36M that it goes up when Q hits the floor and then add the 0.036 ...
Just saw you have done it, but remember the unit for metre is lower case 'm' not the upper case 'M'.
4. Re: OCR M1 - 31st May 2012 :)
(Original post by raheem94)
Just saw you have done it, but remember the unit for metre is lower case 'm' not the upper case 'M'.
I will remember that, thanks
5. Re: OCR M1 - 31st May 2012 :)
http://www.ocr.org.uk/download/pp_08..._jan_l_gce.pdf
Hi Can anyone help me out ...
Q1 I used the formula
70g-F=(0.3)*70
Thus F = 665N
But the answer is 707N
So then I did 70 g + (0.3*70)
... But I don't know why I added the 0.3*70
Any explanations would be helpful, thanks
6. Re: OCR M1 - 31st May 2012 :)
(Original post by Smiley Face :))
http://www.ocr.org.uk/download/pp_08..._jan_l_gce.pdf
Hi Can anyone help me out ...
Q1 I used the formula
70g-F=(0.3)*70
Thus F = 665N
But the answer is 707N
So then I did 70 g + (0.3*70)
... But I don't know why I added the 0.3*70
Any explanations would be helpful, thanks
See the below diagram(the box represents the man):

Now resolve the forces,
7. Re: OCR M1 - 31st May 2012 :)
(Original post by raheem94)
See the below diagram(the box represents the man):

Now resolve the forces,
Thanks so much!!
8. Re: OCR M1 - 31st May 2012 :)
Jan 2007 Q6
http://www.xtremepapers.com/papers/O...tion_Paper.pdf
Im really stuck
This is my working out ...
Part 1 I got 0.64 m/s which is right...
After this I fail to gain any marks ...
Please can I have some help, thanks
9. Re: OCR M1 - 31st May 2012 :)
ew im dreading mechanics! cannot do them at all!
10. Re: OCR M1 - 31st May 2012 :)
(Original post by megank)
ew im dreading mechanics! cannot do them at all!
Haha, me too!! can u help with the above q??
11. Re: OCR M1 - 31st May 2012 :)
(Original post by Smiley Face :))
Jan 2007 Q6
http://www.xtremepapers.com/papers/O...tion_Paper.pdf
Im really stuck
This is my working out ...
Part 1 I got 0.64 m/s which is right...
After this I fail to gain any marks ...
Please can I have some help, thanks
See the diagram below:

The area of the velocity time graph is the distance.

The distance travelled in the region, 0 to 25s, is 8.

So the distance travelled in the region, 65 to 135s, is 32(=40-8)

We know acceleration in the region, 65 to 105s, is 0.02.
To find 'V', use the formula, v=u+at

Hopefully you will be able to do the other parts yourself.

Remember, part (iii) will require the use of area of trapezium.
12. Re: OCR M1 - 31st May 2012 :)
(Original post by raheem94)
See the diagram below:

The area of the velocity time graph is the distance.

The distance travelled in the region, 0 to 25s, is 8.

So the distance travelled in the region, 65 to 135s, is 32(=40-8)

We know acceleration in the region, 65 to 105s, is 0.02.
To find 'V', use the formula, v=u+at

Hopefully you will be able to do the other parts yourself.

Remember, part (iii) will require the use of area of trapezium.
Thanks, again
13. Re: OCR M1 - 31st May 2012 :)
(Original post by Smiley Face :))
Thanks, again
No problem.

It looks that now i am the only person left to answer on this thread, why no one answers here?
14. Re: OCR M1 - 31st May 2012 :)
(Original post by raheem94)
No problem.

It looks that now i am the only person left to answer on this thread, why no one answers here?
I don't know ... But btw I am deffo getting better at mechanics now .. Starting to finally get nearer my aim!
15. Re: OCR M1 - 31st May 2012 :)
(Original post by Smiley Face :))
I don't know ... But btw I am deffo getting better at mechanics now .. Starting to finally get nearer my aim!
What's your aim?
16. Re: OCR M1 - 31st May 2012 :)
(Original post by raheem94)
What's your aim?
An A but if possible a 100UMS
17. Re: OCR M1 - 31st May 2012 :)
(Original post by Smiley Face :))
An A but if possible a 100UMS
I got 100UMS in M1

You need to work a lot harder than you are working now.
18. Re: OCR M1 - 31st May 2012 :)
(Original post by raheem94)
I got 100UMS in M1

You need to work a lot harder than you are working now.
Ok, What would u suggest i need to do?? Ive started getting in the 60's range (out of 72) Really would appreciate the advice
19. Re: OCR M1 - 31st May 2012 :)
(Original post by Smiley Face :))
Ok, What would u suggest i need to do?? Ive started getting in the 60's range (out of 72) Really would appreciate the advice
I just solved the whole book, watched a few examsolutions videos, and did around 5 edexcel past papers.

NB: I did edexcel M1.

You just need to work harder, ensure that you know all the concepts, have a quick review of your book, attempt a few questions from each exercise to ensure that you know everything required for M1.
20. Re: OCR M1 - 31st May 2012 :)
(Original post by raheem94)
I just solved the whole book, watched a few examsolutions videos, and did around 5 edexcel past papers.

NB: I did edexcel M1.

You just need to work harder, ensure that you know all the concepts, have a quick review of your book, attempt a few questions from each exercise to ensure that you know everything required for M1.
Understood Thanks for the tip

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