Question

A train moves 90km per hour. What is the speed of the train in m/s?

Answer 1

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1 km = 1000m

1 h = 3600 s

So 1km /h = 1000/3600 = 5/18 m/s

=>90km/s = 5/18 m/s

=>25m/s

hence,the speed of the train in m/s is 25m/s

Answer 2

90 km/h
km/h
=1000m/3600s
=1000x90m/3600s
=90000m/3600s
=900m/36s
=25 m/s