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  2. A body travels from A to B with a velocity V1 and return back from B to A with a velocity V2. The average speed of the body during the whole journey is explain with steps
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A body travels from A to B with a velocity V1 and return back from B to A with a velocity V2. The average speed of the body during the whole journey is explain with steps

Answers (1)
A Avinash Dongre

 let the distance between A & B  is equal to d

Time taken to go from A to B is  t_1=\frac{d}{V_1}

Time taken to come from B to A is t_2=\frac{d}{V_2}

So V_{average}=\frac{Total \ distance}{Total \ time}=\frac{2d}{\frac{d}{V_1}+\frac{d}{V_2}}=\frac{2V_1V_2}{V_1+V_2}

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