Old Quiz 2009

# Old Quiz 2009 - Physics Honors Quiz: Chapter 5 1. When a...

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Physics Honors Quiz: Chapter 5 1. When a crate of mass m is dragged a distance d along a horizontal surface with coefficient of kinetic friction mk, and then dragged back along the same path to its original position, the work done by friction is A. zero B. - kmgd C. kmgd D. -2 kmgd E. kmgd 2. An acorn falls from a tree. Compare its kinetic energy K to its potential energy U as it falls. A. K increases, U decreases. B. K decreases, U decreases. C. K increases, U increases. D. K decreases, U increases. E. Not covered in the assigned reading. 3. Is it possible for a system to have negative potential energy? A. Yes, as long as the total energy is positive. B. Yes, since the choice of the zero of potential energy is arbitrary. C. No, because the kinetic energy of a system must equal its potential energy. D. No, because this would have no physical meaning. E. Not covered in the assigned reading. 4.

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## This note was uploaded on 02/10/2012 for the course PHYS 123 taught by Professor Phys123 during the Spring '10 term at Buena Vista.

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Old Quiz 2009 - Physics Honors Quiz: Chapter 5 1. When a...

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