If a particle travels a linear distance at speed `v_(1)` and comes back along the same track at speed `v_(2)`.A. its average speed is arithemtic mean `(v_(1) + v_(2))//2`B. its avcrage speed is geometric mean `sqrt(v_(1) v_(2))`C. its average speed is harmonic mean `2v_(1)v_(2)//(v_(1) + v_(2))`D. its velocity is zero

If a particle travels a linear distance at speed `v_(1)` and comes bac

1.	If a particle travels a linear distance at speed `v_(1)` and comes back along the same track at speed `v_(2)`.A. its average speed is arithemtic mean `(v_(1) + v_(2))//2`B. its avcrage speed is geometric mean `sqrt(v_(1) v_(2))`C. its average speed is harmonic mean `2v_(1)v_(2)//(v_(1) + v_(2))`D. its velocity is zero
Answer» Correct Answer - C::D `v_(av) = (2v_(1) v_(2))/(v_(1) + v_(2))` and velocity is zero

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