zamien na metry /s 90km/s 120km/s zamien na km/h 10m/s 75m/s

1 km = 1000 m 1 h = 3600 s 90 km/s = 90 * 1000m/s = 90 000 m/s 120 km/s = 120 * 1000m/s = 120 000 m/s 10 m/s = 10 * 0,001km/(1/3600h) = 36 km/h 75 m/s = 75 * 0,001km/(1/3600h) = 270 km/h