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Chapter 8: Q99P (page 211)

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

Expert verified

Average power required of the swimmer is 24 W .

Step by step solution

01

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

02

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.

03

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,

P=(110N)(0.22m/s)=24.2W≅24W

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

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