An Introduction to Physical Science
14th Edition
ISBN:9781305079137
Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Chapter4: Work And Energy
Section: Chapter Questions
Problem 2MC: Which of the following is a unit of work? (4.1) (a) W (b) J s (c) N/s (d) N m
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Beginning at time t = 0, a student exerts a horizontal force on a box of mass 30 kg, causing it to move at 1.2 m/s toward an elevator door located 16 m away, as shown above. The coefficient of kinetic friction uk between the box and the floor is 0.20.
(a) On the dot below that represents the box, draw and label the forces (not components) that act on the box as it moves at constant speed.
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