the average speed of sound in water is 1500 m/s. how long would it take a sound to travel 9000m/s

9000 m/s is not a distance.

You probably mean 9000 m.
Verify your typing.

time = (distance)/(velocity)

To find out how long it would take for a sound to travel a distance of 9000 meters in water, we need to use the formula:

Time = Distance / Speed

In this case, the speed of sound in water is given as 1500 m/s, and the distance to be traveled is 9000 meters.

So, substituting the values into the formula:

Time = 9000 m / 1500 m/s

Simplifying:

Time = 6 seconds

Therefore, it would take 6 seconds for a sound to travel a distance of 9000 meters in water.