Ambika,
It seems a very comprehensive attempt. However, you need to be aware of the time you can take in the exam. I would suggest there is too much effort to produce the amount of text and calculations.
Therefore, I would suggest that practicing exam technique would be of real benefit. A simple rule is note the marks that can be allocated. For headway calculation it is relavitely small compared to the overall total. Therefore, exam technique says spend your time where you can gain the most marks.
However, if you can deliver speed, quality and quantity, kudos.
Jerry
Edit: spelling error
It seems a very comprehensive attempt. However, you need to be aware of the time you can take in the exam. I would suggest there is too much effort to produce the amount of text and calculations.
Therefore, I would suggest that practicing exam technique would be of real benefit. A simple rule is note the marks that can be allocated. For headway calculation it is relavitely small compared to the overall total. Therefore, exam technique says spend your time where you can gain the most marks.
However, if you can deliver speed, quality and quantity, kudos.
Jerry
Edit: spelling error
Le coureur