Between the two stations, a train accelerates from rest uniformly at first, then moves with constant velocity and finally retards uniformly to come to rest. If the ratio of the time taken be 1:8:1 and the maximum speed attained be 60 km/h, then, what is the average speed over the whole journey?

Between the two stations, a train accelerates from rest uniformly at f

1.	Between the two stations, a train accelerates from rest uniformly at first, then moves with constant velocity and finally retards uniformly to come to rest. If the ratio of the time taken be 1:8:1 and the maximum speed attained be 60 km/h, then, what is the average speed over the whole journey?
Answer» Between the two stations, a train accelerates from rest uniformly at first, then moves with constant velocity and finally retards uniformly to come to rest. If the ratio of the time taken be $1 : 8 : 1$ and the maximum speed attained be $60 km/h$ , then, what is the average speed over the whole journey?

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Between the two stations, a train accelerates from rest uniformly at first, then moves with constant velocity and finally retards uniformly to come to rest. If the ratio of the time taken be 1:8:1 and the maximum speed attained be 60 km/h, then, what is the average speed over the whole journey?

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