A net external nonconservative force does positive work on
Chapter 6, Problem 6.48(choose chapter or problem)
A net external nonconservative force does positive work on a particle. Based solely on this information, you are justified in reaching only one of the following conclusions. Which one is it? (a) The kinetic and potential energies of the particle both decrease. (b) The kinetic and potential energies of the particle both increase. (c) Neither the kinetic nor the potential energy of the particle changes. (d) The total mechanical energy of the particle decreases. (e) The total mechanical energy of the particle increases.
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