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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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 (A) its speed is increasing. (B) its speed is decreasing. (C) its speed might be increasing or decreasing. (D) its speed is not changing. (E) its speed must be a maximum. 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 (A) always. (B) whenever sliding does not occur. (C) whenever sliding does occur. (D) whenever the surfaces are on the verge of sliding. (E) never. 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 (A) both increase. (B) both decrease. (C) increase and decrease, respectively. (D) decrease and increase, respectively. (E) both remain the same. 5.______ You hold a picture against the wall by pushing horizontally on it to the right. The frictional force is (A) vertically upward. (B)
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This note was uploaded on 04/10/2008 for the course PHYSICS 150 taught by Professor Naik during the Winter '08 term at University of Michigan.

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

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