Answer:
2.5 m/s
Explanation:
In this problem, we know:
[tex]\lambda = 5m[/tex] is the wavelength of the wave (distance between two successive crests)
[tex]T = 2 s[/tex] is the period of the wave (the time it takes a wave to pass the location)
From the period, we can find the frequency of the wave:
[tex]f=\frac{1}{T}=\frac{1}{2s}=0.5 Hz[/tex]
And now we can find the speed of the wave by using the following equation:
[tex]v=f \lambda=(0.5 Hz)(5 m)=2.5 m/s[/tex]