A ship sounds its horn when it is 850 m from a large cliff. A passenger on the ship hears the echo 5.0 s later.
What is the speed of the sound?
170 m/s170\text{ m/s}170 m/s
340 m/s340\text{ m/s}340 m/s
680 m/s680\text{ m/s}680 m/s
4250 m/s4250\text{ m/s}4250 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.