A suitcase is hanging straight down from your hand as you ride an escalator. Your hand exerts a force on the suitcase, and this force does work. This work is a. positive when you ride up and negative when you ride down b. negative when you ride up and positive when you ride down c. positive when you ride up or down d. negative when you ride up or down

A suitcase is hanging straight down from your hand as you ride an escalator. Your hand exerts a force on the suitcase, and this force does work. This work is a. positive when you ride up and negative when you ride down b. negative when you ride up and positive when you ride down c. positive when you ride up or down d. negative when you ride up or down

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 94AP: You are driving your car on a straight road with a coefficient of friction between the tires and the...

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