Why is acceleration measured in meters / seconds squared? plz use your own words

Acceleration is velocity over time, and velocity is displacement over time. (This explains why time is squared.) As for the units, physicists (as well as pretty much any other kind of scientist) rely on SI units, which are the units generally accepted by scientists world-wide. Meters are the SI unit for length, and seconds are the SI unit for time.

B, if it was a lower watt she could put it in for her normal time and not burn it