Question

If speed =72 ,how to express it in ms-1

Answer 1

multiply it by 5/18 .

always remember if the velocity is in km/hrs and it is asked to give the answer in m/sec then multiply the no. with this. like here

it will be20 m/s

Answer 2

Multiple it by 5/18

to convert km/ hr multiply by 5/18

And to convert from m/s to km/ hr multiply by 18/5