Question

question 4
what is an appropriate unit for measuring wave speed?
mcters per second
hcrtz (cyclcs per second)
seconds
mctcrs

Explanation:

Wave speed is a measure of how fast a wave travels. Speed is calculated as distance divided by time. Meters per second ($m/s$) is a unit for speed (distance/time). Hertz ($Hz$) is for frequency (cycles per second). Seconds ($s$) is a unit of time. Meters ($m$) is a unit of distance.

Answer:

meters per second