A train moves with a speed of 108 km per hr. Its speed in m/s is?

18 30 38 42

30

108 x \(\frac{5 }{18 }\) = 30 m/s *Note*: To convert m/s to km/hr we multiply by \(\frac{ 18}{5 }\) To convert km/hr to m/s we multiply by \(\frac{5}{18}\)