Question

Zamień jednostki . a) 36 km /h na ms . b) w liczniku v = 22 cm w mianowniku s ( droga ) zamień na km / h.

Answer 1

w godzinie jest 3600 sekund, 1 km=1000m=100000 cm

 

36 km/h= 36 x 1000:3600=36000:3600=10 m/s

 

22 cm/s= 22 x 3600:100000=0,792 km/h

Answer 2

36 km/h =? m/s

1km =1000m

1h =3600s

36 km/h =36 x 1000m : 3600s =36x1000:3600 m/s =10 m/s

 

22 cm/s =? km/h

1cm =0,00001km

1s =1/3600h

22 cm/s =22 x 0,00001 km/1/3600s =22 x 0,00001 x 3600km/h = 0,792 km/h