A car starts from Hither, goes 50 km in a straight line to Yon, immediately turns around, and returns to Hither.The time for this round trip is 2 hours.The magnitude of the average velocity of the car for this round trip is:
A)0 km/hr
B)50 km/hr
C)100 km/hr
D)200 km/hr
E)cannot be calculated without knowing the acceleration

Question

Quizplus · Accepted Answer

The average velocity is calculated as the total displacement divided by the total time. Since the car returns to its starting point, the total displacement is 0 km. Therefore, the magnitude of the average velocity is 0 km/hr, regardless of the total distance traveled or the time taken.

A Car Starts from Hither, Goes 50 Km in a Straight