Chemistry, asked by mrinmo, 1 year ago

a car covers a distance it covers half the distance at 40km/hr and the result at60km/hr find the average speed for the whole journey

Answers

Answered by gentalwolf

1

average velocity is (2v1v2)/(v1+v2)
so (2* 60*40)/60+40
Vav= 4800/100
so Vav=48km/hr

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