Odpowiedzi

2009-12-20T21:19:25+01:00
S= 200 m
t = 300 s
T = 4 s
v = s / t
v = Ob / T
s / t = Ob / T
Ob = (s * T) / t
Ob = 2 * π * r
r = Ob / (2*π)
r = (s * T) / (2 * t * π)
r = (200 * 4) / (2 * 300 * 3,14) = 0,42 m = 42 cm
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