Odpowiedzi

2009-11-20T17:01:27+01:00
Dane: r-20cm t-10s SZUKANE:V-?

V=2π r/T | T
V*t=2π r |:V
T=2π*20cm/10s=40π/1s
2009-11-20T22:37:49+01:00
R=20cm=0,2m
T=10s

V=?

V=2πR/T
V=2*3,14*0,2/10
V=0,1256m/s