All of the following are valid (though perhaps unusual) units for speed except
A) meters/second.
B) miles/minute.
C) inches/year.
D) light-years.

Question

Quizplus · Accepted Answer

Speed is defined as the rate at which an object covers distance. It is typically expressed as a distance divided by time (e.g., meters/second, miles/minute, inches/year). A light-year, however, is a unit of distance, not speed. It measures the distance light travels in a vacuum in one year.

All of the Following Are Valid (Though Perhaps Unusual) Units