Kts/hr is a rate of acceleration by definition, given that kts is a speed, but not one in practical use as far as I know. A nautical mile (1 minute or 1', i.e. 1/60 of a degree, of latitude at the Equator) is far too large to calculate speed per second or acceleration per sec. per sec., aka per sec. squared.
TG9 & Ops Support Branch know how to find you.