5h na s , 20min na h , 3cm na km , 2s na h , 72km/h na m/s ,144km/h na m/s , 25m/s na km/h , 40m/s na km/h , 20cm/s na km/h trzeba zamienic pomocy !!!!!!!

5h=5*60min=5*3600s=18000s 20min=20*1/60h=20/60h=⅓h 3cm=3*1/100000km=0,00003km 2s=2*1/3600h=2/3600h=1/1800h 72km/h=72*1000m:3600s=72*1000m*1/3600s=20m/s 144km/=144*1000m:3600s=144*1000m*1/3600s=40m/s 25m/s=25*1/1000km:1/3600h=25*1/1000km*3600h=90km/h 40m/s=40*1/1000km:1/3600h=40*1/1000km*3600h=144km/h 20cm/s=20*1/100000km:1/3600h=20*1/100000km*3600h=0,72km/h   Proszę o Najlepsze, jeśli pomogłam. ;)