Question

A car travels on a straight road from point $A$ to point $B$ in four hours, and then from point $B$ back to point $A$ in six hours. The distance between the two points is $240km$.
Find out the car's average velocity?

• A. $0km/h$
• B. $48km/h$
• C. $50km/h$
• D. $60km/h$
• E. $100km/h$

Answer 1

The correct option is A $0km/h$

As the car finally reaches at its initial position again, thus net displacement of the car is zero i.e $S=0$ km

Total time taken $t=4+6=10$ h

$\therefore$ Average velocity $v_{avg}=\frac{S}{t}=\frac{0}{10}=0$ $km/h$