Speed can be represented using both metric and imperial units. Bulk modulus pascal m. Light in water 225000 kms.
Looking at a seismogram of the Alamo earthquake Fig.
The speed of sound. X 16 x1011 N m². Average speed is measured in units of distance per time and the average speed formula looks like this. V d t where v is the velocity d is the distance and t is the time so you can read it as Speed Distance Time.