Acceleration= distance / time ^ 2
In that context it presumably means "to the power of".
It is NOT a standard mathematics (or physics) symbol but is used on the internet when you aren't able to write superscripts.
It's also used on some calculators, and some spreadsheet programs like Microsoft Excel.
And in TeX and in Matlab and in Mathematica and ...
However, in some computer languages it means exclusive or.
It's well enough institutionalized you could call it standard notation. No, Newton and Euler wouldn't know what it meant, but anyone who's ever used a hand calculator would.
The ^ notation for exponentiation came out of BASIC. FORTRAN uses ** for the same purpose, but most other high-level programming languages that I know of don't have a corresponding operator.
Python uses ** for exponentiation.
Separate names with a comma.