×
Log in to StudySoup
Get Full Access to Physics - Textbook Survival Guide
Join StudySoup for FREE
Get Full Access to Physics - Textbook Survival Guide

BIO Should You Walk or Run It is 5.0 km from your home to

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman ISBN: 9780321675460 31

Solution for problem 50E Chapter 6

University Physics | 13th Edition

  • Textbook Solutions
  • 2901 Step-by-step solutions solved by professors and subject experts
  • Get 24/7 help from StudySoup virtual teaching assistants
University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

University Physics | 13th Edition

4 5 1 261 Reviews
15
1
Problem 50E

BIO Should You Walk or Run?? It is 5.0 km from your home to the physics lab. As part of your physical fitness program, you could run that distance at 10 km/h (which uses up energy at the rate of 700 W), or you could walk it leisurely at 3.0 km/h (which uses energy at 290 W). Which choice would burn up more energy, and how much energy (in joules) would it burn? Why does the more intense exercise burn up less energy than the less intense exercise?

Step-by-Step Solution:

Solution 50E Introduction We will first calculate the total time required to reach the destination in each case. Since we know power in each case, we can easily calculate the total energy required in each case. Which one will required more energy will be the choice. Step 1 If we run, the speed isrv = 10 km/h and the distance is d = 5 km, Hence the time taken to reach the physics lab is The power during running is Pr= 700 W So the total energy burned is Step 2 Now if we walk, the speed is w = 3 km/h. Hence the time taken to walk is The power required during walking is Pw = 290 W. So the energy burned during walking is So energy burned during walk is more compared to run. Hence I will walk to physics lab to burn more energy. 6 Walking will burn 3.48 × 10 J of energy.

Step 3 of 3

Chapter 6, Problem 50E is Solved
Textbook: University Physics
Edition: 13
Author: Hugh D. Young, Roger A. Freedman
ISBN: 9780321675460

Unlock Textbook Solution

Enter your email below to unlock your verified solution to:

BIO Should You Walk or Run It is 5.0 km from your home to

×
Log in to StudySoup
Get Full Access to Physics - Textbook Survival Guide
Join StudySoup for FREE
Get Full Access to Physics - Textbook Survival Guide
×
Reset your password