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  • A car travels a distance of with speed v1 and then same distance <img

A car travels a distance of ' x^{\prime}with speed v1 and then same distance ' x^{\prime} with speed v2 in the same direction.The average speed of the car is:

Option: 1

\frac{2 v_1 v_2}{v_1+v_2}


Option: 2

\frac{2 x}{v_1+v_2}


Option: 3

\frac{v_1 v_2}{2\left(v_1+v_2\right)}


Option: 4

\frac{v_1+v_2}{2}


Answers (1)

best_answer


\mathrm{v}_{\text {avg }}=\frac{\text { total Distance }}{\text { Total Time }}
\begin{aligned} & =\frac{2 x}{\frac{x}{v_1}+\frac{x}{v_2}} \\ & =\frac{2 v_1 v_2}{v_1+v_2} \end{aligned}
 

Posted by

Kuldeep Maurya

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