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exam1-F02 - Name Exam#1 Physics I Fall 2002 If you would...

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Name_____________________________________________ Exam #1 Physics I Fall 2002 If you would like to get credit for having taken this exam, we need your name above and section number below. Section # _____ 1 M/TH 8-10 (Bedrosian) _____ 2 M/TH 10-12 (Hayes) _____ 3 M/Th 12-2 (Hayes) _____10 M/Th 12-2 (Sperber) _____ 8 M/Th 2-4 (Schroeder) _____ 5 Tu/F 10-12 (Bedrosian) _____ 6 Tu/F 12-2 (Sperber) _____ 7 Tu/F 2-4 (Sperber) If we catch you cheating on this exam, you will be given an F in the course. Sharing information about this exam with people who have not yet taken it is considered cheating on the exam for both parties involved. The Formula Sheet is the last page. You can detach it carefully for easier reference if you wish. Questions Value Score Part A 32 Part B 24 C-1 6 C-2 8 C-3 12 C-4 18 Total 100
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Name_____________________________________________ Part A – Multiple Choice – 32 Points Total (8 at 4 Points Each) Choose the best answer in the context of what we have learned in Physics I. Write your choice on the line to the left of the question number. ______ _1. The first five equations on the Formula Sheet apply only when A) motion is one-dimensional. B) displacement is a linear function of time (straight line graph). C) the positive direction is defined to the right. D) velocity is a linear function of time (straight line graph). E) None of the above. ______ _2. Which of the following are Newton’s Third Law Pairs? A) Your weight and the normal force of the seat holding you up. B) Centripetal force and the tension on a string for an object whirled in a circle at a uniform speed. C) The force of your finger pushing on a cart on a frictionless track and the expression: –(m a) , where m is the mass of the cart and a is the acceleration of the cart. D) All of the above. E) None of the above. ______ _3. Manny is going to throw a ball that Moe will catch 75 feet away. Manny will throw the ball so that it reaches a maximum height of 30 feet. Jack, standing half way between Manny and Moe, is going to throw a ball straight up into the air that will also reach a maximum height of 30 feet. How should Jack time his throw so that his ball has the best chance of colliding with Manny’s ball? Assume they all throw and catch from the same height and we can neglect air resistance. A) Jack should throw his ball before Manny throws his. B) Jack should throw his ball at the same time Manny throws his. C) Jack should throw his ball after Manny throws his. D) We can only answer this question if we know the ratio of the masses of the two balls. E) None of the above. ______ _4. You are pushing a sled on smooth ice, wearing spiked shoes so that you do not slip. The friction of the sled on the ice can be neglected. Which of the following statements, if any, is possible during a two-second time interval during which you are pushing the sled with a constant force? A) The sled moves at a constant speed.
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