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CBSE Class 11-science Answered

A man goes from A to B at 40km/h speed and return B to A at 60km/h
Asked by ranjanvvn | 26 Feb, 2020, 12:11: PM
answered-by-expert Expert Answer
Considering that the average speed is to be calculated based on the given information below is the solution for the same:
 
Given:
 
S1 = 40 km/h 
S2 = 60 km/h 
 
Average speed, S=?
 
S equals fraction numerator 2 S subscript 1 S subscript 2 over denominator S subscript 1 plus S subscript 2 end fraction equals fraction numerator 2 cross times open parentheses 40 close parentheses cross times 60 over denominator 40 plus 60 end fraction equals 48 space k m divided by h 
Answered by Shiwani Sawant | 26 Feb, 2020, 12:27: PM

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CBSE 11-science - Physics
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