Which of the following is an example of a velocity
A. 5 hour
B. 5 km / hour
C. 5 km east
D. 5 km
E. 5 km / hour east
Velocity is a vector quantity, which means it has both magnitude and direction. Among the options given:
A. 5 hour - This is a unit of time, not velocity.
B. 5 km/hour - This is a speed, which is a scalar quantity since it lacks direction.
C. 5 km east - This specifies a displacement, which is a vector, but it does not give a rate of change with time.
D. 5 km - This is a distance, again a scalar quantity.
E. 5 km/hour east - This is a velocity because it specifies both the speed (5 km/hour) and the direction (east).
Therefore, the correct answer is:
E. 5 km/hour east