Answers to p79 27-32

27. 510 km, 79 degrees S of W
28a. 6.5 m/s, b. 6.5 degrees from vertical
29. 160 km/h at 18 degrees west of south
30. 5 km, 53 degrees south of east. You don't need to do this one with a diagram.
31. 5 m/s at 53 degrees from the shore. b. 3 m/s c. 4 m/s
32. 16 m/s at 66 degrees above the horizontal

Unit Two – Vectors and Kinematics in Two Dimensions

Covers Sections 4.1, 4,2 and 7,2

Unit Goals:
1. Know that perpendicular vectors are independent
2. Add vectors graphically with parallelogram and head to tail methods.
3. Use trig and Pythagorean theorem to find resultant.
4. Break vectors into perpendicular components graphically and with trig.
5. Solve motion problems in 2D.

Test - Tuesday Oct, 21

Assignments
Tues 10/7 Read sections 4.1 and 4.2; p. 78, Problems 23 and 24

Mon. 10/13 p. 78, Problems 27-32

Wed. 10/15 p. 172 Problems 40-43, 45, 47

Fri. 10/24 Hole in one lab solution write up.

Mon. 10/20 Review Problems