When sound waves travel from air to water what will happen to the speed at which they are moving?

When sound waves travel from air into water, they'll immediately
start moving faster.  (Their speed will increase.)

Of course, this means that although their frequency won't change,
their wavelength will increase.

Well the magnitude of its acceleration related to that car starts with the oil change like when you have to change the oil in your car you have to make sure that your precious car is starting really propley and very well