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Integrated ConceptsThe 70.0-kg swimmer in Figure 7.44

College Physics | 1st Edition | ISBN: 9781938168000 | Authors: Paul Peter Urone, Roger Hinrichs ISBN: 9781938168000 42

Solution for problem 62PE Chapter 7

College Physics | 1st Edition

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College Physics | 1st Edition | ISBN: 9781938168000 | Authors: Paul Peter Urone, Roger Hinrichs

College Physics | 1st Edition

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Problem 62PE

Integrated Concepts

The 70.0-kg swimmer in Figure 7.44 starts a race with an initial velocity of 1.25 m/s and exerts an average force of 80.0 N backward with his arms during each 1.80 m long stroke. (a) What is his initial acceleration if water resistance is 45.0 N? (b) What is the subsequent average resistance force from the water during the 5.00 s it takes him to reach his top velocity of 2.50 m/s? (c) Discuss whether water resistance seems to increase linearly with velocity.

Step-by-Step Solution:

Solution

Step 1 of 3

a) Consider a swimmer is swimming with initial velocity  and exerts an  average force of  backward with his hands during each  long stroke.

        We need to find out his initial acceleration if water resistance is .

 The net force

                                 

        Work done by the swimmer

                                

                                

                                

                                

        The work done is the kinetic energy of the swimmer can write as,

                                                        

                                

        Implies                 

        The mass of the swimmer

                                        

                                        

        We know that

Step 2 of 3

Chapter 7, Problem 62PE is Solved
Step 3 of 3

Textbook: College Physics
Edition: 1
Author: Paul Peter Urone, Roger Hinrichs
ISBN: 9781938168000

The full step-by-step solution to problem: 62PE from chapter: 7 was answered by , our top Physics solution expert on 07/07/17, 04:39PM. The answer to “?Integrated ConceptsThe 70.0-kg swimmer in Figure 7.44 starts a race with an initial velocity of 1.25 m/s and exerts an average force of 80.0 N backward with his arms during each 1.80 m long stroke. (a) What is his initial acceleration if water resistance is 45.0 N? (b) What is the subsequent average resistance force from the water during the 5.00 s it takes him to reach his top velocity of 2.50 m/s? (c) Discuss whether water resistance seems to increase linearly with velocity.” is broken down into a number of easy to follow steps, and 84 words. This full solution covers the following key subjects: resistance, Water, velocity, average, initial. This expansive textbook survival guide covers 34 chapters, and 3125 solutions. Since the solution to 62PE from 7 chapter was answered, more than 886 students have viewed the full step-by-step answer. College Physics was written by and is associated to the ISBN: 9781938168000. This textbook survival guide was created for the textbook: College Physics , edition: 1.

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Integrated ConceptsThe 70.0-kg swimmer in Figure 7.44