Physics, asked by harinderkhurpa, 1 year ago

rohan comes to school from home with speed v1 and return back with speed v2 find its avg speed during the whole journey

Answers

Answered by Varunsharma123

Average speed=Total distance travelled /Total time taken

harinderkhurpa: you are thinking i am fool i also know this

harinderkhurpa: plzz solve with details

ronthedon: if you know this then do it your self brother

harinderkhurpa: I think you also have not brain how foolish words you are saying dear

harinderkhurpa: i want answer not formula he gave me formula the answer is diffrent dear

ronthedon: So don't dare to say anything to me

Answered by umiko28

Answer:

$\huge\underline{ \underline{ \red{your \: \: answer}}}$

Explanation:

$\sf\red{distance \:between \: home \: and \: school \: d } \\ \\ \sf\pink{by \: using \: D=s×t } \\ \\ \sf\orange{ = > t1 = \frac{d}{v1} } \\ \\ \sf\green{ = > t2 = \frac{d}{v2} } \\ \\ \sf\purple{avg.speed = \frac{2d}{t1 + t2} } \\ \\ \sf\green{ = > \frac{2d}{ \frac{d}{v1} + \frac{d}{v2} } } \\ \\\sf\red{ = > \frac{2d}{ \frac{dv2 + dv1}{v1 + v2} } } \\ \\ \sf\blue{ = > \frac{2d(v1 + v2)}{d(v2 + v1)} } \\ \\ \sf\purple{ = > AVG.SPEED \frac{2v1v2}{v2 + v1} } \\ \\ \\ \large\boxed{ \fcolorbox{red}{yellow}{hope \: it \: help \: you}}$

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