I don't think the cruising speed thing will have required the conversion- the answers surely weren't all that similar since the conversion is very small (1=1.15 or something)? It's also written somewhere that speed is measured in knots but referred to as MPH (I'm sure someone can correct me...).
I finished the motivation paper and was fairly happy with it (I've read the pass mark is 70%). Didn't finish any of the aptitude tests. I noticed the bloke next to me was filling in the blanks randomly when we got to the last 20 seconds... I thought that was a bit mad but apparently you're not marked down...
Don't worry, worrying one!