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A box slides on ice. A boy pushes back on it, trying to slow it down. The sign of the work done by the boy
A box slides on ice. A boy pushes back on it, trying to slow it down. The sign of the work done by the boy on the block is ___________. negative positive It depends on the speed of the block. zero
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Fundamentals of Thermodynamics
Authors: Richard E. Sonntag, Claus Borgnakke, Gordon J. Van Wylen
6th edition
471152323, 978-0471152323
