FACULTY OF SCIENCE, AUTUMN 2007
PHYS 124 LEC A1 : Particles and Waves (Instructor: Marc de Montigny)
Walker, Physics, Chapter 3: Vectors in Physics
- Section 3-1: Scalars versus Vectors
- Read page 56
- Section 3-2: Components of a Vector
- Nice summary on p. 57, margin on the right, above Fig. 3-4.
- P. 59, Figure 3-6 displays components with different signs
- P. 60, Exercice 3-4
- Section 3-3: Addition and Subtraction of Vectors
- Addition (Geometric Method): see p. 61, Figure 3-8
- Addition (with Components): see p. 63, Figure 3-13
- Subtraction: see p. 64, Figure 3-14
- Section 3-4: Unit Vectors
- P. 64, Figure 3-15
- A vector A with components Ax and Ay may be written as A=Axx+ Ayy
- Section 3-5: Displacement, Velocity and Acceleration Vectors
- Remark: The text is inacurate, because the position is not a vector. The displacement is. But it is not a major issue here.
- Displacement Vector: p. 66, Eq. 3-2
- Velocity Vector: p. 66, Eq. 3-3 (average) and Eq. 3-4 (instantaneous)
- Acceleration Vector: p. 67, Eq. 3-5 (average) and Eq. 3-6 (instantaneous)
- Section 3-6: Relative Motion
- P. 70, Eq. 3-8 connect the velocities expressed in different coordinate systems
- See the equation at bottom of p. 70 about reversing the subscripts on a velocity
- [Added September 15th] Proof of the Relative Velocity Formula
- I will solve p. 78, Problem 66