Odpowiedzi

2010-03-13T21:30:57+01:00
P = W:t
P = F*S/t
P = F*V

F = P:V

P = 30kW = 30000W
V = 72km/h = (72*(5/18))m/s = 20m/s

F = 30000W:20m/s
F = 1500N
F = 1,5kN
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