Question

Which statement includes a description of velocity?
A. A marble rolls 30 centimeters away from the table.
B. A bicycle moves 8 meters per second.
C. A student walks 20 meters down the street.
D. A car travels east at 45 kilometers per hour.

Answer 1

D. Velocity is speed with direction; "east at 45 km/h" gives both magnitude and direction. B gives only speed, A and C give distances.