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Exam1_06 - Physics 151 October 9 2006 Exam#1 Name Lab...

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Physics 151 Name______________________________ October 9, 2006 Exam #1 Lab Section Number________________ Instructions: There are 20 multiple choice questions (worth 2 points each), and 3 work problems (worth a total of 60 points). You must answer all questions to receive full credit. You must show all equations and substitutions made to obtain your answers for the work problems. Write the final answers to the problems with their respective units in the spaces provided. Part I (40) Part II (60) Total (100) “May the net force be with you on this exam.”
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Part I: Short Answers Multiple Choice: Please write in the letter of the item that best answers the question. 1.______ The magnitude of a particle’s displacement during an interval (A) might be greater than the distance traveled during that interval. (B) might be less than the distance traveled during that interval. (C) must be equal to the distance traveled during that interval. (D) might be the negative of the distance traveled during that interval. (E) must be the negative of the distance traveled during that interval. 2.______ If the acceleration of a particle moving on the x axis is negative 3.______ If F N is the magnitude of the normal force and μ s is the coefficient of static friction for two surfaces in contact, the magnitude of the static frictional force is given μ s F N 4.______ A block rests on an incline that makes an angle θ with the horizontal. As θ is slowly increased, the magnitude of the normal force and the static frictional force of the incline on the block
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