Could you please solve this question: Topic is Doppler effect!
Suppose the source of surface water waves is stationary so that vs = 0.00 m/s. Consider a water strider moving along the surface away from the wave source at what it thinks is a very slow speed of vws = 0.10 m/s. Will the apparent wave frequency the strider measures increase, decrease, or stay the same? Explain.
Water striders can skim along the surface of water at an amazing speed of up to 150 cm/s.