Question

Q1: A train moving with a uniform speed of 54 km/h. What is its speed in m/s?

(a) 15 m/s

(b) 1.5 m/s

(c) 9 m/s

(d) 90 m/s

Answer 1

54×5/18
=15m/sec
hope it helps

Answer 2

Note: 1km/hr = 1000/3600

                      = 10/36

                      = 5/18 m/s.


Now,

Given Speed of the train = 54km/hr

                                          = 54 * 5/18 m/s

                                           = 5 * 3 

                                           = 15 m/s.



Therefore its speed = 15m/s.


Hope this helps!