QUIZ 7 -- 6, 8( try 24) , 19, 78, 26, 33, 45 (try 32) , 49 (try 87) , 87, 54, Re-do 78 using energy conservation, 82 (try 55, 56) , 64 (try 67) |
TURN IN: |
6. (a) 374 (J) (b) -333 J (c) zero (d) 41 J (e) 352 J |
8. (a) -38 J (b) 125 J (c) zero (d) 87 J |
78. (a) 140 m/s (b) 55000 J |
26. (a) 1140 N/m (b) 0.276 J (c) 21.4 cm |
54. (a) 6.32 cm (b) 12 cm |
82. 51 (m) |
64. 2000 (N) |