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Unformatted text preview: , Ph112 - Exam 1 PRINT your Name Slot __ 'teetion (A-E) __ 1. An object, starting from rest at the origin, has the 1·0 'acceleration V5. time' graph shown below at left. Carefully sketch the 'velocity V5. time' graph and the 'position vs. time' graph for this object on the remaining axes. Justify (with words and/or equations) the new graphs·· at least one or two representative sections. Assign appropriate numbers for the tic marks on the two new vertical axes. (I'm giving you two sets of graphs, one for practice, one for cleaned up final versions.) a(t) em/5 2 ) 3. 2_-1 1- 0++++++-;-; I (sec)-,-2-,--4- vlt) xCU------ . v(tl x(t)----------- practice final Show All work. Bluebooks for scrap only! Do not write on the back of these sheets. Name Slot 2. An elevator of mass M kilograms is supported by a cable whose breaking strength is -rNewtons. What is the shortest distance in ~hjch the elevator can be brought to rest, with constant deceleration, if it is initially descending at speed v?the elevator can be brought to rest, with constant deceleration, if it is initially descending at speed v?...
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- Spring '08