Odpowiedzi

2009-12-13T15:34:15+01:00
Witam!
z.1
30 m/s= ? km/h

30m/s = 30x1000/3600 = 30000/3600 = 8i 2200/3600km/h

pzdr.
2 1 2
Najlepsza Odpowiedź!
2009-12-13T15:55:34+01:00
30 m/s
s = 30 m/ = 30 1000 km= 0.03 km
t = 1 s = 2/3600 h
V = s/t
V = 0, 03 km/ 1/36000 h = 108 km/h

lub II sposób:
1 m = 1/1000 km
1 s = 1 /3600 h
30 m/s = 30/1000 km/ 1/3600 h= 3/100 * 3600/1 = 108 km/h
4 2 4