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# A 10000 j b 2000 j c 6000 j d 0j e 8000 j 8 9 10 2007

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Unformatted text preview: 0J E. 8000 J 8. 9. 10. 2007 Quiz 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 µk, and then dragged back along the same path to its original position, the work done by friction on the crate is A. 0 B. -µkmgd C. µkmgd D. -2 µkmgd E. 2 µkmgd 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. Distributed By: Tyrone G Carter TGC 2. Physics Honors Distributed By: Tyrone G Carter D. E. 3. K decreases, U increases. Not covered in the assigned reading. 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. For a car to maintain a constant acceleration, the car's engine must A. keep a constant power output. B. keep decreasing its power output. C. keep increasing its power output. D. burn fuel at a constant rate. E. None of these are true. The quantity Fd is A. the kinetic energy of the object. B. t...
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## This note was uploaded on 08/29/2010 for the course PHYS 38234 taught by Professor Ramesh during the Spring '09 term at Berkeley.

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