Question

As you sit on a dock, you notice a wave crest pass. you count another 16 wave crests in the next eight seconds. What is the period, wavelength, frequency, and speed of the waves?

Answer 1

The frequency is 16/8sec = 2 Hz

The period is 8sec/16 = 0.5 sec

There's not enough information given in the question to calculate the wavelength or the speed.