Question

Convert using dimensional analysis 18/5 kmph into m s-1

Answer 1

you use 5/18 rule or convert km into meter and hour inti metre

Answer 2

18/5 kmph, we can also write that, for every 5hr, it travels 18km
.:time=5hr=>(5*60*60)s
distance=18km=>(18*1000)m
.:speed=18/5=>(5*60*60)/18*1000
=>(5*6*6)÷18*10
=>(5*36)÷18*10
=>180÷180=[1] ans.