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M4 Bearings mess

Okay so everything in M4 is nice and easy, EXCEPT the first chapter. Like most of the time I don't get what's going on. I'm okay with relative velocity in general but these bearings don't make any sense. And this is the first time I encounter them written like that in my life. Example:
Capture d’écran 2016-02-16 à 17.40.15.png

Now what I understood from the notation, N10W should mean exactly the opposite of what's drawn in the diagram. So why are they doing it like that? Why is it called N10W when in reality it's S10E? What is going on here???

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This is soo me!

Following this thread
Original post by gagafacea1
Okay so everything in M4 is nice and easy, EXCEPT the first chapter. Like most of the time I don't get what's going on. I'm okay with relative velocity in general but these bearings don't make any sense. And this is the first time I encounter them written like that in my life. Example:
Capture d’écran 2016-02-16 à 17.40.15.png

Now what I understood from the notation, N10W should mean exactly the opposite of what's drawn in the diagram. So why are they doing it like that? Why is it called N10W when in reality it's S10E? What is going on here???


With winds, we generally talk about the direction they are blowing from.

The same is true in everyday life. A westerly wind blows from the west.
Reply 3
Avatar for TeeEm
TeeEm
19
relative velocity is very difficult to self teach ....
Lucky, on AQA relative motion is in M3...
:frown:
Reply 5
Avatar for Zacken
Zacken
22
Original post by Argylesocksrox
Lucky, on AQA relative motion is in M3...
:frown:


Don't complain. It was a compulsory part of my GCSE. :tongue:
Original post by Zacken
Don't complain. It was a compulsory part of my GCSE. :tongue:


I enjoyed mech, but I had to self teach it all as we had 2hours of further a fortnight.

So I downloaded a nicely put together book on M3, the first, page relative velocity...

After a few hours of staring at the page, wondering what in the **** is going on, I promptly decided to do FP4.
Reply 7
Avatar for TeeEm
TeeEm
19
Original post by Argylesocksrox
Lucky, on AQA relative motion is in M3...
:frown:


in AQA M3 relative motion is very mild
it is nowhere close to the relative motion these guys are complaining about ...
In my opinion it is one of the hardest topics of mechanics in the EDEXCEL board
Reply 8
Avatar for TeeEm
TeeEm
19
Original post by Argylesocksrox
I enjoyed mech, but I had to self teach it all as we had 2hours of further a fortnight.

So I downloaded a nicely put together book on M3, the first, page relative velocity...

After a few hours of staring at the page, wondering what in the **** is going on, I promptly decided to do FP4.


definitely more useful
Original post by TeeEm
in AQA M3 relative motion is very mild
it is nowhere close to the relative motion these guys are complaining about ...
In my opinion it is one of the hardest topics of mechanics in the EDEXCEL board


http://www.maths.lancs.ac.uk/~groves/AQA%20M3%20Teaching%20Materials.pdf

I used this book, honestly looks a lot harder than the exam questions.
Reply 10
Avatar for TeeEm
TeeEm
19
Original post by Argylesocksrox
http://www.maths.lancs.ac.uk/~groves/AQA%20M3%20Teaching%20Materials.pdf

I used this book, honestly looks a lot harder than the exam questions.


This book is almost the real deal but the exam questions are mild and most questions can be solved with vectors in components
Original post by TeeEm
This book is almost the real deal but the exam questions are mild and most questions can be solved with vectors in components


Hmm, I think I should take M3 as a backup module considering that...

The rest of M3 looks rather easy.
Reply 12
Avatar for TeeEm
TeeEm
19
Original post by Argylesocksrox
Hmm, I think I should take M3 as a backup module considering that...

The rest of M3 looks rather easy.


what are you taking?
Original post by TeeEm
what are you taking?


All Further modules(1-4),M1,M2,D1,S1.
Reply 14
Avatar for TeeEm
TeeEm
19
Original post by Argylesocksrox
All Further modules(1-4),M1,M2,D1,S1.


that is good ... all the FPs is very nice
Original post by TeeEm
that is good ... all the FPs is very nice


They are nice modules, how do they compare to other board's further papers?
Reply 16
Avatar for TeeEm
TeeEm
19
Original post by Argylesocksrox
They are nice modules, how do they compare to other board's further papers?


slightly easier but far broader topic coverage than any other board.
Original post by TeeEm
slightly easier but far broader topic coverage than any other board.


You've offended me :frown:.

I think my school chose AQA because it's a very poor performing school and anything anything to lighten the load, sadly :frown:.
Reply 18
Avatar for TeeEm
TeeEm
19
Original post by Argylesocksrox
You've offended me :frown:.

I think my school chose AQA because it's a very poor performing school and anything anything to lighten the load, sadly :frown:.


I am sorry to hear that ...
Reply 19
Avatar for Gome44
Gome44
10
Original post by gagafacea1
Okay so everything in M4 is nice and easy, EXCEPT the first chapter. Like most of the time I don't get what's going on. I'm okay with relative velocity in general but these bearings don't make any sense. And this is the first time I encounter them written like that in my life. Example:
Capture d’écran 2016-02-16 à 17.40.15.png

Now what I understood from the notation, N10W should mean exactly the opposite of what's drawn in the diagram. So why are they doing it like that? Why is it called N10W when in reality it's S10E? What is going on here???


The wind relative to the man is coming from N10W

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