"FEW" Could Explain This A Level Physics Question

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Today we do an A Level Physics Problem from OCR Paper 3 A Level Physics on Forces and Explaining. It covers an important part of exam technique and that is explanation questions and multi step calculation.

This is an OCR A Physics Question but fully applicable to all exam boards including AQA, OCR A and B, WJEC, Edexcel, iEdexcel, CIE and similar courses such as IB Physics and AP Physics.

The original paper can be found here:
https://www.ocr.org.uk/Images/726709-...

And the original mark scheme:
https://www.ocr.org.uk/Images/726831-...

Please note that this is not an official solution and there may be mistake and better approaches and I am not affiliated with the exam board.

Chapters:
00:00 Common Mistakes in A Level Physics
01:04 Command Words
01:37 Explain Questions
02:25 My Tutoring
03:18 Multistep Calculations
03:36 Breaking a problem down into parts
04:07 Explaining what you are calculating
04:23 SUVAT Projectile Motion
06:24 SUVAT with constant acceleration
10:03 Assumptions and gravitational field strength
10:33 Ratios for comparing values