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

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter13: Universal Gravitation

Section: Chapter Questions

Problem 13.36P

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