Given:
It takes 1.5 s to complete one wave.
One wave covers 25 m.
To find the speed of the wave.
Step-by-step explanation:
The frequency of the wave will be
![\begin{gathered} f=(1)/(1.5) \\ =0.667\text{ Hz} \end{gathered}](https://img.qammunity.org/2023/formulas/physics/college/c7fhwcbivv2taven50bcg6um3weypjlwzg.png)
The wavelength of the wave is
![\lambda\text{ = 25 m}](https://img.qammunity.org/2023/formulas/physics/college/yyrscjopoeulnu4yda6fvxx30xe7v6w2nb.png)
The speed of the wave can be calculated by the formula
![v=f\lambda](https://img.qammunity.org/2023/formulas/physics/high-school/jl8nf6bt8lf9pxiy3380yrsx3nzm2gk95h.png)
On substituting the values, the speed of the wave will be
![\begin{gathered} v=\text{ 0.667}*25 \\ =16.67\text{ m/s} \end{gathered}](https://img.qammunity.org/2023/formulas/physics/college/spj67t3eis41130ny9wkicuzog12pgl7un.png)
Thus, the speed of the wave is 16.67 m/s