On 11/09/2019 21:06, David Paste wrote:
Hello,

When writing, for example, "metres per second per second" for
acceleration, it is noted as ms^-2 (where the caret symbolises
the -2 is in superscript).

I understand that, and why, "per second per second" is "seconds
squared", but in the notation, why is it superscript minus 2? Why
not just superscript 2?

because 'per'

meter seconds squared is not the same as meters per second squared


If I was ever taught this in maths lessons, the info is no longer
in my head.

Thanks in advance for any help,

David Paste.



--
How fortunate for governments that the people they administer don't think.

Adolf Hitler