if the speed of shatabdi express is 150 miles per hour,then express its speed in SIunit

Answer 1

150 mi/hr * 1609 m/mi * 1hr/3600s = 67 m/s

Answer 2

First hr changed into sec=60into 60=3600 than we devide the value of one mile into sec=1.6\3600(1.6 km changed into m)=1609/3600=67m per sec