exam1-F02-ans - Physics I Exam 1 Fall 2002 Answer Key Parts...

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Physics I – Exam 1 – Fall 2002 Answer Key – Parts A & B Part A 1. D 2. E 3. B 4. D 5. A 6. C 7. A 8. F Part B B1. AB, GH, HI B2. CD, DE, FG B3. DE, EF, FG, GH B4. Leave blank or “none” etc. B5. AB, DE, FG, HI B6. CD, GH
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Physics I – Exam 1 – Fall 2002 Answer Key – Part C Note: Be strict about units only where the exam explicitly calls for units. C-1 +2 points for knowing that you need to find the area under the curve. +1 point for getting the correct area = 0.1 N s +2 points for using J = p in some form. +1 point for the correct speed = 6.67 m/s C-2 +1 point for a x = 0. +1 point for a y = –g or –9.8; must have – sign! +1 point for v 0,x = v L times sin or cos. Symbols or numbers OK. +1 point for using cos with v 0,x . Correct value = 3.33 m/s. +1 point for v 0,y = v L times sin or cos. Symbols or numbers OK. +1 point for using sin with v 0,y . Correct value = 5.77 m/s. +1 point for v f,x = v 0,x whatever v 0,x was, right or wrong. +1 point for v f,y = 0. –1 point for x 0 if not filled in; any choice is OK except blank. –1 point for y 0 if not filled in; any choice is OK except blank.
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