I instituted the use of "Reading Questions" in my classes this year, and I
am getting some of the most interesting questions this semester from my
students.
This is one that I've not run into before... A student has asked which is
proper terminology: "Negative Acceleration" or "Deceleration".
Of the textbooks on my shelf, about half are for the first and the other
half seem to use both interchangeably. Interestingly, those that say
"Negative Acceleration" is the proper term are all of a more recent
vintage.