Question

Which of the following is a unit of speed?

A) h

B) nm

C) cm/y

D) km/s^2

Answer 1

D, km/s^2

Step-by-step explanation:

This is a unit of speed because it is saying kilometers over seconds squared, and that is a unit of speed similar to miles per hour or mph or m/h.

Answer 2

Option c that it means cm/year.

Step-by-step explanation:

Nm means nanometer, 1x10^9m

Km/s^2 is acceleration

h.. it may be height