[Smiley Face :)]

(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 ...

[raheem94]

(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.

[raheem94]

(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'.

[Smiley Face :)]

(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

[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

[raheem94]

(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,

[Smiley Face :)]

(Original post by raheem94)
See the below diagram(the box represents the man):



Now resolve the forces,

Thanks so much!!

[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

[megank]

ew im dreading mechanics! cannot do them at all!

[Smiley Face :)]

(Original post by megank)
ew im dreading mechanics! cannot do them at all!

Haha, me too!! can u help with the above q??

[raheem94]

(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.

[Smiley Face :)]

(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

[raheem94]

(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?

[Smiley Face :)]

(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!

[raheem94]

(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?

[Smiley Face :)]

(Original post by raheem94)
What's your aim?

An A but if possible a 100UMS

[raheem94]

(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.

[Smiley Face :)]

(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

[raheem94]

(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.

[Smiley Face :)]

(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