An observer stands at a distance of 990 m from a firework launcher.
The observer hears the bang of the firework 3.0 s after seeing the flash of the explosion. Using this information, what is the speed of sound in air?
110 m/s110\text{ m/s}110 m/s
330 m/s330\text{ m/s}330 m/s
990 m/s990\text{ m/s}990 m/s
2970 m/s2970\text{ m/s}2970 m/s
295 exam-style questions on CIE IGCSE Physics Sound, covering Sound. Each one has a worked solution and a mark scheme showing where the marks go.