What is Metre per second squared?

The metre per second squared is the unit of acceleration in the International System of Units. As a derived unit, it is composed from the SI base units of length, the metre, and time, the second. Its symbol is written in several forms as m/s, m·s or m s, m s 2 {\displaystyle {\tfrac {\operatorname {m} }{\operatorname {s} ^{2}}}} , or less commonly, as m/s/s.

As acceleration, the unit is interpreted physically as change in velocity or speed per time interval, i.e. metre per second per second and is treated as a vector quantity.