A gun is fired in the air at a distance of 660 m from a person, He hears the sound of the gun after 2 seconds. What is the speed of sound?
330 m/s
Distance travelled by sound = 660 m/s
Time taken by the sound = 2 seconds
Speed of sound in air = distance travelled / time
Speed of sound = 660m / 2s = 330 m/s