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What was the substitution required for the integral in Q15c ?

I wrote constant of integration missing and you don’t need to integrate it using IBP

Last mechanics projectile required same technique as the one in 2022

Harder than 2021. Easier than 2022 and 2023

I’m going to do Q 11 to 14 first and then make a decision what to do next. Starting with MCQs is not a good idea. Usually get bogged down on Q7 to 10.

Just chill

I think there will be a difficult mechanics pulley or pendulum question in 15 or 16

I don’t think there will be a projectile motion question this year. It’s been done to the death. They have not examined balancing of forces in extension 1 and it’s definitely in the syllabus. That’s my tip this year. See Q 15 part a 2022 ext 2. I think they will have a similar slightly easier...

In Cambridge, vector planes are an extension topic. Planes are not mentioned explicitly in the extension 2 Syllabus. Vector planes have been examined in past extension 2 trial exams.

I

NESA solutions are up

Very insightful watching the maths teacher do the extension 2 exam on the u tube video. I thought he did extremely well overall. Great to see a maths teacher struggle with the vector representation of the horizontal and vertical components of projectile motion. I used dx dot dt and dy dot dt...

E4 cut off 46/70 or 65.7%

I think the extension 1 exam was harder than 2021 and probably on par with last year. The MCQs were really hard and wasted time. Questions 11 and 12 were mostly straightforward except the binomial. Question 13 took a lot of time. Q 14 b was interesting and I think you had to substitute the y...

Alternative solution to 16(c)

The proof question in 16b was similar to a trial question a couple of years ago. Required same technique. NESA not very original.

Just found Question 16 (a). In mastering HSC maths by jonathon Lee!!!!!!