Question

A 90m long train takes 25sec to pass a pole. Let me calculate the speed of the train in km/hr.

Answer 1

Speed = Distance/time

Speed = 90/25

Speed = 3.6 m/s

To convert m/s to km/s we multiply the value by 18/5 or 3.6,

3.6 * 3.6 = 12.95 km/h

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Answer 2

Answer:

12.95

Step-by-step explanation:

length of the train/distance = 90m

time taken to pass a pole/time= 25 seconds

speed = distance/time

=90/25

=18/5 m/s (convert to 2 kilometre/hour)

18/5*18/5 = 324/25

= 12.95 km/hr