Question

select the correct answer. 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.

Explanation:

Velocity is a vector quantity with both magnitude and direction. In option D, both Valerie and Owen have the same speed (8 kilometers per hour) and the same direction (south). In option A, one car is parked (velocity = 0) and the other moves in circles (direction constantly changing). In option B, the speeds are different (40 mph and 50 mph). In option C, the directions are opposite (east and west).

Answer:

D. Valerie rides her bike south at 8 kilometers per hour. Owen jogs south at 8 kilometers per hour.