Concept explainers
To sow that average speed for the whole trip is the harmonic mean of
Answer to Problem 23P
The average speed for the whole trip is the harmonic mean of
Explanation of Solution
Let be the distance be
Given that the half distance be
Formula:
Time taken by speed u
And remaining half distance be
Time taken by speed v
Now, total trip time be
Now, the average
Hence, the average speed for the whole trip is the harmonic mean of
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