Make sure you've attempted the questions yourself first, and marked them using the mark scheme provided at the end of the booklet.
Then watch the videos below - even for questions you got completely correct, to reinforce your learning.
Questions on the test will be similar, and some will be the same as these!!
This first video is just a reminder about the key equations that are in the formula booklet - I've extracted the key ones and put them onto one page here.
This video covers Q 1 to 3
This one explains Q 4 to 6
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