Question

A car completes it's journey in straight line in three equal parts with speeds V1,V2 and V3 respectively. The average speed v is given by

Answer 1

Answer:

answer is....3v1v2v3/(v1+v2+v3)

Explanation:

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Answer 2

Answer:

v1+v2+v33

3v1v2v3−−−−−√

1v=1v1+1v2+1v3

3v=1v1+1v2+1v3

Answer :

D

Solution :

Average speed, v=Total distanceTotal time

=ss/3v1+s/3v2+s/3v3=31v1+1v2+1v3

⇒3v=1v1+1v2+13.

Explanation: