so g = 9.8m/s/s ~ 10m/s/s.
So what? So let's use this for something useful..
First we'll practice a bit with Wylie E. Coyote...page 91 is here
and page 92 is here.
Please note that there is a typo on #4 - use the grand-daddy equation.
This is a great video to watch about motion...