Install OS X Cheetah on my Macbook Air with OS X Yosemite How can I install Cheetah (OSX 10.0) on my 2014 Macbook? Can I use virtual box? Where can I find iso files to install? BTW my macbook is running Yosemite
You will need to virtualize the hardware. PearPC claims to successfully run Mac OS X 10.3, so my best assumption is that it would also run 10.0.

The matter of obtaining and running the OS on your computer is of dubious legal nature, depending on where you live and what licenses you accepted when you purchased and ran the OS.