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Its a 3u enrichment question (vector q), was surprised it appeared in 4u. Anyway you find vector OT in two different ways: OT = lambda OS as T lies on OS OT = OP + mu PR as T lies on PR Equate the two, and equate coefficients of vectors r and p, and you should get lambda = mu = 2/3

btw raw 85 generally aligns to mid 90s from raw marks info, highly doubt it aligns to less than 90 this year even with the easier exam

also does anyone have access to the paper, and if they do, could they share it?

because displacement is a vector quantity, unlike speed or distance, max means just + i think

ahhh rip thats so unlucky

yes yes please be right i need to see the paper to be sure but I'm begging that its right

also what was the amplitude, i had 2root3 :rolleyes:

for 13 a though, n=6? right?

total mass = 6m (of the system) which was the denominator, and there was a factor of 2 you could remove from both top and bottom

z^2/|z| = (|z|^2)*(cisa)^2/|z| = |z|*cis(2a) where z = |z|cisa

How long does it usually take for the paper (and answers) to go up?

pretty sure state rankers will need 100 4u and 100 3u, probably 15 ruse kids getting 100 raw on this lmao

Here's the graph for extension 1 as well.

Never thought I'd get to share this, but this might be useful for estimating aligned marks from raw marks. Note: Data is from rawmarks.info but it's taken from 2004 onwards, and the cohort strength and syllabus has changed since then (but there isn't enough data for the last few years alone, and...

Just to clarify, the only change to Extension 1 and 2 is that questions 11-16 (or 14) are not necessarily worth exactly 15 marks anymore.

From past years, you should get at least mid 90s with those results.

just as a reference, the predictions were 0.05 higher than the school predictions for both me and @vernburn but school predictions were based off trials only (our trial ranks were mostly similar to overall ranks)

@Xanthi, could you also give me an atar estimate? (wondering how much english will drag me down) not sure about exacts ranks, especially for my worse subjects, so im guessing a bit here english rank: ~75-85/175 B6: 60-80 per year, although i think my cohort is slightly weaker than usual in...