1. Review: Chapter 5 Answers only
1. a = 0.3 m/s2 7. g = 9.0 N/kg
2. m = 5.0 kg 8. μ = 0.46
3. F = 2.2 x 104 N 9. Ff = 18.8 N
4. F = 144 N 10. Fapplied = 7.1 N
5. a = -0.53 m/s2 11. Fapplied = 384 N
6. Fg = 670 N 12. F = -8200 N
C. Using Concepts D. Extending Concepts
1. m = 250 kg 1. omit
2. F = 3.0 x 103 N 2. a = 0.23 m/s2
3. m = 5.0 kg 3. μ = 0.40
4. μ = 0.255 4. a = 6.6 x 10-25 m/s2
5. a = -2.0 m/s2
6. Fnet = -790 N
7. omit

2. Ch. 7 Study Guide
1. F, equal to 6. B 11. E 16. A
2. T 7. D 12. C 17. D
3. T 8. B 13. G
4. T 9. D 14. B
5. F, opposite 10. B 15. F
18. diagram
19.
Variable Value Variable Value
Fg 82 N FN -73.7 N
Fgx 35.9 N Ff -14.7 N
Fgy 73.7 N Fnet 21.2 N
20. Acceleration would increase because sinӨ Fgx
gets larger.
21. moves at a constant velocity