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    To all 2020-ers, can we exchange resources (exam papers, trials, etc) for subjects with new syllabi such as 3u and 4u Maths?

    Hi all, the title pretty speaks for itself. Since 2020 cohort is the first one that is going to sit the new maths syllabus, it is really hard to find resources for topics such as vectors (3u), 3d vectors (4u), differential equation (3u) and so on. If anyone is willing to share their resources...
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    Hard enrichment question from the Cambridge textbook!

    Could someone please help me with the following question? I have no idea how to approach it. Thank you!
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    Questions about the sample paper on vectors from

    Hi all, I am having a hard time trying to understand the wording of the following questions. First of all, for part b), I am really confused by what it means by "in the opposite direction of z perpendicular to z". We're talking about only one vector here so how can one vector both in the...
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    Mechanics - Resisted Motion - Getting stuck on the last part (part iv) -Please help!

    Hi there, I am so close to getting over this question but unfortunately I am still getting stuck on the last part. I have tried to a lot of ways but none has worked out. Attached below are the question, the answer to part iv) along with my full working out for the previous parts respectively...
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    I am self-learning mechanics (projectile motion). How do I solve the question below?

    Hi all, I have just learnt the basic of 4u mechanics and I feel quite overwhelmed by the number of formulae I have to remember for this topic. I also don't know which formulae I should use. I am getting stuck on the question below, I got up to the expression linking t and alpha but since I don't...
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    "Describe the motion..." mechanics question

    Hi all, I am a bit confused by the last part of the following question. I wonder whether the velocity will ever each 0 or not. The thing is v=cos^2(x) which means when x=pi/2 v=0. However, the expression for x in terms of t is x=tan^-1(t) which means that each will never reach pi/2? If that is...
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    How do you know when to use u-substitution for integration and what u is? (example included)

    Hi, the title pretty much speaks for itself. There are so many methods to use in 4u integration so how do you identify when to use u-substitution and what the value of u is? I came across the following question (part c) in which it already hints at using u-substitution and gives you the suitable...
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    (Vector) How to express a vector in terms of another vector?

    For question 15c), I am not quite sure what to do to express those vectors in terms of the other vectors. I have never come across any similar questions nor have I ever learnt any formula applicable to this. Could someome please explain to me the concept behind it and give me a hint to solve...
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    Tips on how to excel in Integration

    So I’m half way through 4u integration and I just feel so overwhelmed by all the rules, different types and methods to solve it. At the same time, I also feel like I really like doing integration (no idea if this makes sense :)) ) as it is just so interesting and satisfying when you get it...
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    Do they allow you to use “reversing the step” in the HSC? (Nature of proof)

    Allow me to elaborate on the title. So the new syllabus has introduced a new topic called “nature of proof” which basically consists of proving problems. At tutor, I was told that according to NESA, you are not allowed to assume something is true and work backwards to the end. However, at school...
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    3u vector question

    I have trouble solving part b of question 20. I tried to use dot product as the question instructs but it led me to nowhere. Any help would be greatly appreciated.
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    (discussion in a lab report) how to answer to "how do you control any other variables"?

    Hi, so in the discussion section of my upcoming practical assessment on advanced mechanics, I will potentially be asked to answer to "how do you control any other variables (controlled variables I reckon)?" Since I am not exposed to the experiment question beforehand, I wonder if there's a...
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    Looking for an online Physics tutor who can mark my work and give me feedback (year 12)

    Hi, I'm a year 12 student who is looking for an online tutor that can help me mark my work and give me feedback. To be precise, I'm not really asking a tutor and that person does not need to Skype or prepare lessons or exercises for me. Rather, I just need someone to mark my work (HSC past...
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    (Physics) Potential experiment questions on advanced mechanics?

    Hello to all 2019-ers, I understand that you are currently doing the HSC right now but I really appreciate if someone could give me an idea on the type of experiment question on advanced mechanics that could be asked in an assessment (my first assessment will be a prac). Is there anyone who had...
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    My school forces us to keep 12 units until trial if you do 4u maths

    Hi all, the title pretty much speaks for itself. My initial plan was to drop Chem immediately in term 1 of year 12 and then drop Legal in term 2 (my school doesn't allow you to drop to 10 units until completing the first assessment of term 1 of year 12 and I doubt they will allow me to drop any...