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t = 2 min = 120s
r = 1 m
Szukane :
v = ?
Rozwiązanie :
v = s/t
s = l
l = 2πr
l = 2*3,14 * 1 = 6,28 m
v = 6,28 / 120 = 0,0523 m/s
= 3,14 m/min
s = 2πr
v = s/t = 2πr/t = 2*π*1/120 ≈ 0,052 m/s Gotowe!!!