In phys/higher phys 1A all you use from hsc physics like some of the formulas from the space topic (energy,keplers,kinematics) and thats about it
If you did 4u maths, mechanics will help you out in the first topic (this is where some of the formulas from the space topic come in)
If you did chem, stuff about moles/ideal gas law will help you out in the thermal physics topic
and for the third topic of waves stuff from 3u/4u SHM and circular motion will come handy