Leaving home in the morning, I back down my driveway. Beforeentering the road, I realize I forgot my lunch and so I pull backin to my parking spot.
What is my velocity just before I realized I forgot my lunch andstopped?
What is my velocity the instant after I realized I forgot mylunch and started moving back
towards my parking spot?
A change in velocity is an acceleration. Did I accelerate, fromthe moment just before I
stopped the car to the moment just after I started moving backtowards my parking spot?