AQA Additional Science Physics Modual - 21st Jan - Revision Thread Watch

vaanish
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#61
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#61
In the plane question, yes, it was moving at a constant speed.

Im pretty releived that other people got a really large answer for that wheelchair question, I thought i got it wrong.

IMO, chemistry was the easiest, then physics. Bio was pretty hard.
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billet-doux
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#62
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#62
Yeah i'd probably agree with you there vaanish.
I'm just pretty worried about results already, because i want to do Chemistry & Biology next year! Anyone in the same boat as me? xx
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monkee
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#63
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#63
Is that 3m/s2 wrong then? And not drawing 0 velocity for that last graph?
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billet-doux
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#64
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#64
I have no idea. For the last graph, i drew the velocity at 0 for 4 seconds, then it accelerated(when the collision occcurs), then decelerated after.
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davedave4619
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#65
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#65
I actually found the biology quite easy but definetly found the physics the hardest. Although i found physics hard last time and did really well, so hopefully I'm still gonna get an A* lol. It is such a long wait to March...

I think I got 3m/s2 for the accelertion question actually.
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monkee
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#66
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#66
Maybe it's just the one I've lost for definite then...5 marks is such a small amount to lose though.
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billet-doux
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#67
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#67
Does anyone have any ideas what the grade boundry would be
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monkee
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#68
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#68
I always thought that it was 90% and the raw-UMS could shift a little, but that in cases like this where the paper was neither too easy nor hard it would be about 5 marks.
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Matthewsimpson
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#69
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#69
I came out feeling really good but have realised that I've probably made some silly mistakes. Oh well, no use in fretting when there is nothing I can do about it now.
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billet-doux
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#70
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#70
Tbh, i think it will be far more than 5 marks for an A*. In the physics specimen paper, i think an A* was 33/45 !

Matthewsimpson, i feel the same!
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vaanish
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#71
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#71
In our physics mock, 65% was a mid B, and that was from the official grade boundaries for last year.

I actually found module 2 easier than mod 1, and i got 100/93/92 for mod 1 so im confident about my grades.

AFAIK, 3m/s2 was right, though it sounds like a strangely small number dosent it.
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m8nmina0h4
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#72
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#72
Argh.. I messed that one up! Well I'm not sure how I did, I didn't actually learn the nuclear fission so that's something I definitely got all wrong, and from discussing answers with other people I've got a few other things wrong as well!

I found this one the hardest out of the three to be honest, and I actually found the specimen paper fairly easy..

I'm annoyed they gave the equations, I learned them and it is part of the specification so it's not really fair to just give them away..
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billet-doux
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#73
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#73
I don't remember what i got for the first bit!
But, yeah i got 5.4 V.
For the hill one, i put that the resistance increases because the hill is steep. Therefore, to keep the same voltage, the sccoter needs more current. Don't know if it's right!
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monkee
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#74
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#74
(Original post by ScottyDawgUk)
That sounds along the line of what the question was about, but I got it totally wrong , i started to talk about rubbish about grav potential energy which is badly wrong!
i think your answer was good.

i did well badly in that one. so many dropped marks!!!!!!
I talked about gravitational potential energy - it needs more energy to have the same kinetic energy and gain GPE, so it requires more energy in the form of current. I think that's at least partially right...I got one about the car wrong, saying about the driver gaining/losing electrons from air particles rushing past
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Matthewsimpson
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#75
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#75
Well I was talking about the motor going against gravity, which is a force acting against it whilst it is going uphill and I don't see why that is wrong.

And the charge the battery holds is in coulombs no?
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billet-doux
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#76
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#76
Don't worry, i don't reckon i did well either!
Most of my friends said they found it a bit tricky too. At least if everyone's done badly, they have to bring the grade boundry down
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billet-doux
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#77
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#77
(Original post by Matthewsimpson)
Well I was talking about the motor going against gravity, which is a force acting against it whilst it is going uphill and I don't see why that is wrong.

And the charge the battery holds is in coulombs no?
Yeah, maybe that's right, and not mine! I just thought that it had to be about resistance, as it talked about current. I couldn't see the link between current, gravity & force

Also yeah, the charge is in coulombs.
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Matthewsimpson
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#78
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#78
(Original post by monkee)
I talked about gravitational potential energy - it needs more energy to have the same kinetic energy and gain GPE, so it requires more energy in the form of current. I think that's at least partially right...I got one about the car wrong, saying about the driver gaining/losing electrons from air particles rushing past
That was the friction between the road and the tyres no?
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monkee
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#79
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#79
I thought it was something to do with air because of the 'damp, humid' bit. Well, I'm keeping my fingers crossed because I did put something about the gain or loss of electrons that that will get me 1 mark.
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monkee
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#80
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#80
I thought it was something to do with air because of the 'damp, humid' bit. Well, I'm keeping my fingers crossed because I did put something about the gain or loss of electrons that that will get me 1 mark.
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