D.12. CHAPTER 12
Exercise 1
1. 3.17, 8.83
3. 3.89, −4.89
5. 1.96, −5.96
7. 0.401, −0.485
9. 0.170, −0.599
11. 2.87, 0.465
13. 0.907, −2.57
15. 5.87, −1.87
17. 12.0, −14.0
19. 5.08, 10.9
21. 2.81, −1.61
23. 8.37, −2.10
25. 0.132, −15.1
27. 2.31, 0.623
29. 4.26 in.
Exercise 2
1. [1, −6]
3. [11.7, 0.255]
5. [6.84, 0.658]
7. [4.83, 0.165]
9. [8.47, 0.957]
11. [11.1, 0.123]
13. [12.1, 0.371]
15. [1.39, −1.55]
17. [1.74, −0.608]
Exercise 3
1. 2/3 or 3/2
3. 4 and 11
5. 5 and 15
7. 4 m × 6 m
9. 15 cm × 30 cm
11. 162 m × 200 m
13. 2.26 in.
15. 44.9 mi/h
17. 40 mi/h; 50 mi/h
19. 5 km/h
21. 15.6 h
23. 21.8 days
25. 9.07 ft and 15.9 ft
27. 24.5 s
29. 0.381 A and 0.769 A
31. −0.5 A and 0.1 A
33. 6.47 in.
Review Problems
1. 6, −1
3. 0, 5
5. 0, −2
7. 5, −2/3
9. 1, 1/2
11. ±3
13. 1.79, −2.79
15. 0.692, −0.803
17.
19. 1/2, −2
21. −0.182, 9.18
23. ±5
25. 3.54, −2.64
27. 0.777, −2.49
29. 0.716, −2.32
31. 202 bags
33. 15 ft × 30 ft
35. 3 mi/h
37.
39. 16 in. wide × 5.0 in. deep or 10 in. wide × 8.0 in. deep
41. 3.56 km/h
43. 12 ft × 12 ft
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