Question

Express the following speeds in km/hour : (i) 40 m/sec.​

Answer 1

Answer:

40×18/5=144 Km/h. hope u find it useful

Answer 2

Answer:

40×18/5=144 km/h

Trick: Multiply by 18/5 when you want to convert m/sec into km/h

and if you want m/sec from km/h then multiply by 5/18

May its helpful for u