Conceptual Physics

Answers to selected problems

Chapter 3 Answers

C.3 6.0 knots Southwest

C.5 íD

0.1 (a) (í4.0 km, 3.0 km)

(b) (3.0 km, 2.0 km) (c) (í3.0 km, í2.0 km)

1.1 81.2

1.3 1.41e3 kg/m^3

3.1 (7.00 knots, 121°)

3.3 ( 3.00, 90.0°)

4.1 (a) (3, í25) blocks
(b) No

4.3 (a) A = (3, 2)

(b) B = (í1, í3) (c) C = (í3, 3)

5.3 (a) Submit answer on paper.

(b) D (c) C (d) F (e) B and E

6.1 (a) (18, 8)
(b) (3, 6)
(c) (10, 10, 10)
(d) (a+d,b+e,c+f)

6.3 (a) a = 5

(b) b = í 4

8.1 (a) (18, í6, 48)
(b) (9, í12, 15)
(c) a^2 ,íab,íac)
(d) (í 2 a+18,í 10 í 6 b,í 2 c+12)

9.1 (a) (8, 230°)

(b) (21, 200°) (c) (32, 80°)