Question
A train 150 m long passes a pole in 10 seconds.
(i) Find the speed of the train in km/h. (ii) Find the time taken to pass a platform 300 m long.Solution
(i) Speed = distance/time = 150/10 = 15 m/s In km/h: 15 × (18/5) = 54 km/h (ii) Distance to pass platform = 150 + 300 = 450 m Time = 450 / 15 = 30 s Answer: (i) 54 km/h (ii) 30 seconds
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