The average speed of a car which covers half the distance with a speed of 30 m/s and other half with a speed of 50 m/s in equal interval of time is?
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40m/s I made a quick guess
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first half covered by 30 m/s
second half by 50 m/s
so ,average=50+30/2
80/2=40
second half by 50 m/s
so ,average=50+30/2
80/2=40
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