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A motorcycle drives from A to …

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A motorcycle drives from A to B with a uniform speed of 30km/hr and returns back with a speed of 20km/hr. Find the average speed. (Use two methods to solve)

Posted by Meena Tk 2 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Pt Arnav Sharma 2 years, 5 months ago

For this type of ques there are two formulas one is for same distance and another is for same time i ur ques distance is same and displacement is zero so formula for same distance is 2v1×2v2/v1+v2 here v means speed 2×20×30/20+30 1200/50 24 km/hr this is a trick formula dont use in exam use long method

0Thank You

Apeksha Sharma 2 years, 5 months ago

24km/h

0Thank You

ANSWER

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CBSE > Class 09 > Science