Question

A goods train moves at a speed of 15 metres/second. what is its speed in kilometres/hours?​

Answer 1

Answer:

Time = Distance / speed = 1800/40 = 45 hours. Thus we can find the average speed as: Average Speed = (Total distance) / (Total Time) = (1800 + 1800) / (30 + 45) = 3600/75 = 48 km / hr.

Answer 2

we know that,

1 m/s = 18/5 km/h

then 15 m/s = 15 × 18/5 km/h

= 54 km/h

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