I can tell u what it means
Answer:
well longitudinal waves are waves that move the medium parallel to the direction in which the waves travel
Explanation:
in waves, there is compression and rarefaction which is what makes up the distance of the wave. i hope this helps. if it doesn't, lmk and i'll fix it
4 miles / 0.5 hour = 8 miles / 1 hour.
8 miles per hour.