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# M1 - Degrees of accuracy? [Edexcel]

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1. I was doing Q5 part (b) of Jan 2012 and I obtained the answer 15.625m. The mark scheme states 15.6m or 16m to be accepted only, there's no AWRT. The question didn't ask for a specific degree of accuracy, so what should I do in this situation? I'm thinking 2 or 3 significant figures, but not sure.
2. (Original post by jshark97)
I was doing Q5 part (b) of Jan 2012 and I obtained the answer 15.625m. The mark scheme states 15.6m or 16m to be accepted only, there's no AWRT. The question didn't ask for a specific degree of accuracy, so what should I do in this situation? I'm thinking 2 or 3 significant figures, but not sure.
If you do not use any approximations during the question, you are free to give your answer exactly or to as many s.f as you want.

If you use any approximations (including 9 as 9.8 metres per second per second) you have to give your answer to 2 or 3 s.f.

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