1. The problem statement I find it sometimes difficult to come up with the equation relevant to the question. If any one has any tips, your help is appreciated. 2. Relevant example For example: A passenger climbs aboard a northbound bus and walks toward the back at a rate of 1.8m/s. The bus starts off up the street at 9.2m/s. What velocity will the passenger appear to be walking relative to: A) a person who is walking 2.1 m/s south along the sidewalk B) a person who is walking 2.1 m/s north along the sidewalk 3. The attempt at a solution Let p = passenger in the bus b = Bus g = guy who is walking My attempt: a) Vpg = Vpb + Vbg is this correct? why or why not? thanks.