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A particle travels first half of the tot...

A particle travels first half of the total distance with constant speed `v_1` and second half with constant speed `v_2.` Find the average speed during the complete journey.

Text Solution

Verified by Experts

`v_(mv)= (s+s)/(t_1+ t_2)= (2s)/((s)/(v_1)+ (s)/(v_2)) = (2v_1v_2)/(v_1+v_2)`

Note : - Here `v_(av)` is the harmonic mean of two speeds.
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