Question

A car starts from Bangalore to Mumbai and returns back to Bangalore again in 20hrs. What are the average velocity and average speed of the car if odometer reading of the car, when it started was 2200 km and when 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
$AverageSpeed=\frac{1600}{20}$
$=80\frac{km}{hr}$