Which statement includes a description of velocity?
A student walks 20 meters down the street.
A bicycle moves 8 meters per second.
A car travels east at 45 kilometers per hour.
A marble rolls 30 centimeters away from the table.
A car travels east at 45 kilometers per hour.
The statement that includes a description of velocity is: "A bicycle moves 8 meters per second."
Velocity is a measure of how fast an object is moving in a specific direction. In this case, the statement provides both the speed (8 meters per second) and the mode of transportation (bicycle), giving us a clear description of velocity.