PHYS 2101 Midterm: PHYS 2101 LSU 2007s 1
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6 (gonz alez, tth 1:40pm: please be sure to write your name and circle your section above, for the problems, you must show all your work. Let us know what you were thinking when you solved the problem! No other reference material is allowed during the exam: be sure to get extra credit by answering the question below, good luck! If you responded yes , then please circle your grade if you remember it. The particle is stopped (b) (4 pts) at what time does the particle reverse its direction of travel? t=0s t=1s t=2s t=3s. The acceleration has di erent signs at di erent times. How long does the elevator take to obtain this velocity? (hint: you may want to identify this point in your plot for velocity in part (a)). Express your answer in terms of a and vmax.
