1. SECTION 6.3 RELATIVE VELOCITY
 Objectives
Analyze situations in which the coordinate system is moving.
Solve relative-velocity problems.

2. RELATIVE VELOCITY
Relative Velocity – the relative velocity of object “a” to object “c” is the vector sum of object “a’s” velocity relative to object “b” and object “b’s” velocity relative to object c.
va/b + vb/c = va/c
Do Example Problem 3 p. 158
a2 + b2 = R2 And need Angle tan θ = Ay / Ax
= R tan θ = .75 / 4
= R tan θ = .1875
= R INV Tan
4.07 m/s = R θ = 10.62°

3. RELATIVE VELOCITY Do Practice Problems p. 159 # 22-25 Read p. 159
Read p. 159
We will go back to chapter 5 and use the following equations when we have 2 vectors that are not at right angles.
Ax = A cos θ
Ay = A sin θ
Do 6.3 Section Review p. 159 # 26-31