1.

A car travels the first third half a distance with v1speed the second third with v2speed and the last third with v3speed what is its mean speed over the entire distance

Answer»

ANSWER:

n/Vavg= 1/v1+1/v2+1/v3

Explanation:

If a PARTICLE COVERS n-equal distances with VELOCITY v1,v2......hn.

Then Vavg,

n/Vavg= 1/v1+1/v2+........+n/vn



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