Yeah I've realised that I've made some big mistakes on the earlier bits (For example used mass rather than weight for the coefficient of friction calculations), so I'm going to go back and start again. I think I've got the idea now anyway, thanks for the pointers and I'll see how I get on! :)
This is a UK A-Level question that I'm really struggling with, and can't seem to find any resources online that explain it well.
I've been given the following details:
mass of gokart + driver = 520kg
radius of track = 42m
Maximum frictional force between tyres and road on flat track F = 20%...