A gun is fired in the air at a distance of 660 from? a prsn. He hears a sound of the gun after 2 sec. What is the speed of sound? Share with your friends Share 0 Deepak Kumar answered this Dear Student , Given , d = 660 t = 2s v = 2d/t v = 2*660/2 v = 660m/s Regards 0 View Full Answer