A car travels a distance of 'x' with speed V1 and then same distance 'x' with speed V2 in the same direction. The average speed of the car is:
Select the correct option:
A
$\frac{v_1 v_2}{2\left(v_1+v_2\right)}$
B
$\frac{v_1+v_2}{2}$
C
$\frac{2 x}{v_1+v_2}$
D
$\frac{2 v_1 v_2}{v_1+v_2}$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Sol.
$$
\text { Average velocity }=\frac{\text { Total displacement }}{\text { Total time }}=\frac{x+x}{\frac{x}{v_1}+\frac{x}{v_2}}=\frac{2 v_1 v_2}{v_1+v_2} v
$$
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