The speed of sound is not measured in "seconds". It's measured in units of distance per unit of time, such as:

* Meters per second (m/s): This is the standard unit used for the speed of sound.

* Kilometers per hour (km/h)

* Miles per hour (mph)

* Feet per second (ft/s)

The speed of sound varies depending on the medium it travels through. In dry air at 20°C (68°F), the speed of sound is approximately:

* 343 meters per second (m/s)

* 1,235 kilometers per hour (km/h)

* 767 miles per hour (mph)

* 1,125 feet per second (ft/s)

So, it's not accurate to talk about the "speed of sound in a second". Instead, you can talk about the distance sound travels in one second.