Motion in A Straight Line

Question: A boy walks to his school at a distance of 6 km with constant speed of 2.5 km/hour and walks back with a constant speed of 4 km/hr. His average speed for round trip expressed in km/hour, is



1) 24/13
2) 40/13
3) 3
4) 1/2
Solution: Explanation: Explaination
uniform-motion

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