Question

oblicz15km/h ale zamien na m/s

oblicz 20m/s ale zamien na km/h

oblicz 30m/s ale zamien na km/h

Answer 1

1 km = 1000 m

1 h = 3600 s

1 m = 0,001 km

1 s = 1/3600 h

 

15 km/h = 15*1000m/3600s = 4,166 m/s ≈ 4,2 m/s

20 m/s = 20*0,001km : 1/3600h = 72 km/h

30 m/s = 30*0,001km : 1/3600h = 108 km/h