A student is standing on a school sports field, exactly 300 m away from an assistant who fires a starter pistol.
When the pistol is fired, a puff of smoke is seen and a loud bang is heard.
Describe how the student can measure the time it takes for the sound wave from the bang to travel the 300 m.
64 exam-style questions on Edexcel GCSE Physics 4.1 Wave properties, covering 4.1.1 Waves transfer energy and information, 4.1.2 Frequency, wavelength, amplitude, period and wavefronts, 4.1.3 Longitudinal and transverse waves, 4.1.4 The wave speed equations, 4.1.5 Measuring wave velocity, and 4.1.6 Calculating depth or distance from waves. Each one has a worked solution and a mark scheme showing where the marks go.