An undersea earthquake triggers a tsunami.
The tsunami wave travels a distance of 180 000 m180\,000\text{ m}180000 m in 15 minutes15\text{ minutes}15 minutes.
Calculate the speed of the wave in m/s\text{m/s}m/s.
Use the equation:
wave speed=distancetime \text{wave speed} = \frac{\text{distance}}{\text{time}} wave speed=timedistance64 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.