The maths in AS physics is still rearranging equations/substituting etc, it just gets tricky when you have to figure out what equation and which numbers to use. Aside from that you will need to be familiar with graphs in the form y=mx+c and understand what each of the terms show, and apply them in context. Again, the actual maths itself is nothing more than multiplication/addiction etc.
It's similar for A2, it's just some of these equations can be a bit more difficult to rearrange (e.g. the decay of charge equation or magnitude equation which require you to know how logarithms work)
It's similar for chemistry, although chemistry has far less calculations to deal with