Question

please explain me that how 54 kilometre per hour equals to 54 × 5/18
also remaining aswer​

Answer 1

54×5/18 because

when we convert kilometre per hour into meter per second

= 54×1km/1hr

convert it into m/s

=54×1000/3600

by simplifying

=54×5/18

now its your answer

Answer 2

In 1km there are 1000m

and in 1hour there are 3600 seconds

So to change km/h into m/s

we multiply 1000/3600 to km/h

(1000/3600 = 5/18)