Help Please?! Mechanics energy question?

Can someone please help me with the M2 MEI 2014 June paper?

http://www.mei.org.uk/files/papers/M2_2014_June.pdf
Q4 A ii)

I get the same equation for finding out speed as the mark scheme but I end up getting a different answer at the end? Can someone please go through it? :smile:

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Zacken

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Original post by XxsciencemathsxX

Can someone please help me with the M2 MEI 2014 June paper?

http://www.mei.org.uk/files/papers/M2_2014_June.pdf
Q4 A ii)

I get the same equation for finding out speed as the mark scheme but I end up getting a different answer at the end? Can someone please go through it? :smile:

Can you put up your working?

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