you set your watch by the sound of a distant siren. will it go fast or slow? Explain Share with your friends Share 0 Sanjay Singh answered this Dear student Regards 1 View Full Answer Poornesh answered this Of course it will be slow bcoz the siren comes from distance thereby having a time difference due to the distance it has to travel . Though it would be a very slight difference about a 1 sec or so 0