a scooter goes 8m/s
how fast does it go in km/h
what the question is simply asking us to do is to convert from metre/second to kilometer/hr
1000m === 1km
60 secs ==== 1min
60mins ===== 1hr
therefore
60 x 60 secs ==== 1hr
3600secs ==== 1hr
to convert 8m to km
1000m ===== 1km
8m ======= xkm
introduce cross multiplication
x * 1000 = 8 x 1
x1000 = 8
divide both sides by 1000
1000x/1000 = 8/1000
x = 0.008 km
to convert seconds to hr then we multiply 0.08 by 3600secs
0.008 x 3600
= 28.8 km/h
the answer is 28.8 km/h