Odpowiedzi

2009-05-30T20:01:20+02:00
V= s/t
V= 20/4
V= 5 m/s

5m/s= 5x 1/1000km/ 1/3600h= 5x 1/1000km : 1/3600h= 5x 1/1000 x 3600/1= 0,5x36= 18 km/h
  • Użytkownik Zadane
2009-05-30T20:01:55+02:00
T = 4s
s = 20m
a) v = s/t
v = 20/4 = 5m/s

b) 5m/s = 5*0,001km/ 1/3600 h = 18km/h