Question

Express 15 metre per second in kilometre per hour

Answer 1

15 m/s

15m = 0.015 km and
1s = 1/3600 hr

15m/s = 0.015/(1/3600) = 0.015*3600 = 15*3.6 = 54km/hr

Answer 2

Hi there

Your answer is :-

15m=15/1000km

1s=1=3600hours

15m/s = (15/1000).(3600/1) km/hour


=54km/hour

Thank You