Understanding the Concepts

* Frequency: The number of complete cycles an object makes per second. In this case, the frequency is 2 cycles/second (2 Hz).

* Wavelength: The distance between two consecutive crests (or troughs) of a wave. Here, the wavelength is 5 meters.

* Wave Speed: The speed at which a wave travels.

Formula

The relationship between wave speed (v), frequency (f), and wavelength (λ) is:

v = fλ

Calculation

1. Substitute the given values:

v = (2 Hz) * (5 m)

2. Calculate the wave speed:

v = 10 m/s

Answer

The speed of the water wave is 10 m/s.