Sound travels at about 340 metres per second. What is this in kilometres per second?

Answer 1

To convert meters per second (m/s) to kilometers per second (km/s), you need to divide the value in m/s by 1000 (because there are 1000 meters in one kilometer). So:

340 m/s ÷ 1000 = 0.34 km/s

Therefore, sound travels at about 0.34 kilometers per second.