During a geological survey, a seismic wave travels 300 m through rock in 50 ms. The wavelength of the seismic wave is 120 m.
What is the frequency of the seismic wave?
5.0 Hz5.0\ \mathrm{Hz}5.0 Hz
50 Hz50\ \mathrm{Hz}50 Hz
0.050 Hz0.050\ \mathrm{Hz}0.050 Hz
2.5 Hz2.5\ \mathrm{Hz}2.5 Hz