Question

A car starts from Bangalore to Mumbai and returns in 20 hours. What is the average velocity and average speed of the car if the odometer reading of the car when it started was 2200 km and when it finished was 3800 km?

• A. Average Velocity : 0km/hr, Average Speed : 0 km/hr
• B. Average Velocity : 0km/hr, Average Speed : 80 km/hr
• C. Average Velocity : 80km/hr, Average Speed : 80 km/hr
• D. Average Velocity : 80km/hr, Average Speed : 0 km/hr

Answer 1

The correct option is B

Average Velocity : 0km/hr, Average Speed : 80 km/hr

Displacement = 0 ( as initial position is same as final position )
So, average velocity = 0;

Distance = 3800 - 2200 = 1600km

Average speed = $\frac{1600}{20}$ = 80 $\frac{\text{km}}{\text{hr}}$