Answer:
0.4 m/s
Explanation:
First of all, let's find the frequency of the wave, which is equal to the reciprocal of its period:
[tex]f=\frac{1}{T}=\frac{1}{5 s}=0.2 Hz[/tex]
Now we can find the wave speed using the formula:
[tex]v=f\lambda[/tex]
where
f = 0.2 Hz is the frequency
[tex]\lambda=2 m[/tex] is the wavelength
Substituting, we find
[tex]v=(0.2 Hz)(2 m)=0.4 m/s[/tex]
