So it just stormed here...

[a500lbgorilla]

That could have hurt if hit while falling at 9.8m/s*s lolz

fyp

9.8 m/s/s is also correct units.

isn it like m/s/s = m*s/s?

1/2/3 = 1/(2*3) = .167

It's like this m/s * (1/s) = m/s/s = m/(s*s)