A train travels between two stations a and b 135 km apart in 5 hours. if on the return journey the average speed is reduced by 2 km/hr, what is the average speed during the journey from a to b and b to a
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Velocity of the train = 135km/5h = 27 km/h
Velocity of the returning train = 25 km/h
∴ Average speed = (27 + 25)/2 = 26 ms^-1
Velocity of the returning train = 25 km/h
∴ Average speed = (27 + 25)/2 = 26 ms^-1
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