Question

A swimmer moves through the water at an average speed of 0.22 m/s. The average drag force is 110 N. What average power is required of the swimmer?

Short answer

Average power required of the swimmer is 24 W .

Step-by-step solution

Given data:

An average speed of the swimmer through the water, v = 0.22 m/s

Average drag force on the swimmer, F = 110 N

To understand the concept:

Using the formula between power, force, and velocity, you can find an average power required of the swimmer.

Formula:

P = Fv

Here, P is the average power, F is the average drag force, and v is the average speed.

Calculate the average power required of the swimmer:

The average power required of the swimmer is,

P = Fv

Since the direction of the force and velocity is the same, Power is,

$$\begin{gathered} P=(110\mathrm{N})(0.22\mathrm{m}/\mathrm{s}) \\ =24.2\mathrm{W} \\ \cong 24\mathrm{W} \end{gathered}$$

Hence, an average power required of the swimmer is 24 W .