Constant speed of a train is 54 km/h. What is its speed in unit 'm/s' ?
(A) 15
(B) 90
(C) 1.5
(D) 9
Answers
Answered by
2
Answer will be 15 m/s.
(54×5/18)m/s=15m/s {We multiply 5/18 to km/h to change it into m/s}
(54×5/18)m/s=15m/s {We multiply 5/18 to km/h to change it into m/s}
Answered by
2
Converting km into m and hrs into secs we get
1km=1000m
So,54km=54*1000=54000m
And,1 hr=60mins and 1min=60secs so
1hr=60*60=3600 secs
Now speed=Distance/Time
54000/3600=15m/sec
Hope this helps...
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