what is the speed of sound per second

The speed of sound varies depending on the medium through which it travels and the temperature of that medium. In air at 20°C (68°F), the speed of sound is approximately 343 meters per second (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn) . At 0°C (32°F), the speed of sound in air is about 331 m/s (1,086 ft/s; 1,192 km/h; 740 mph; 643 kn) . In water, the speed of sound is approximately 1,481 meters per second (4,721 feet/s) at 8°C (46°F) . The speed of sound in iron is about 5,120 m/s, and in diamond, it can reach 12,000 m/s. These variations are due to the differences in the elasticity, temperature, and density of the medium through which the sound wave is propagating. The speed of sound is a constant that depends on the daily temperature and is slower than the speed of light.