Which pair of sentences is describing the same velocity? a)a car is parked. a car is moving in circles. b)a bus drives 40 miles per hour north. a truck drives 50 miles per hour north. c)a boy walks east at 6 kilometers per hour. a girl walks west at the same speed as the boy. d)valerie rides her bike south at 8 kilometers per hour. owen jogs south at 8 kilometers per hour.