Question

Ocean waves travel in to the beach at an average velocity of 2.5 m s . If these waves come in 4 seconds apart, what is the average distance between the wave peaks, considering the formula V= d t ?

Answer 1

Answer : Average distance is 10 m.

Explanation :

It is given that,

Average velocity of the wave, $v=2.5\ m/s$

Time, $T=4\ s$

So, frequency $\nu=\dfrac{1}{T}=\dfrac{1}{4}\ Hz$

We know that the average distance between the wave peaks is called as wavelength.

The relation between the wavelength, frequency and the time period is :

$\lambda=\dfrac{v}{\nu}$

$\lambda=\dfrac{2.5\ m/s}{\dfrac{1}{4\ s}}$

$\lambda=10\ m$

So, the average distance between the wave peaks is 10 m.

Answer 2

$2.5 \times 4$