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Dane:
m = 1t = 500 kg
V = 20 m/s
Szukane:
Ek=?
Rozwiązanie:
Ek=m*V2/2
Ek=1000*20(2)/2
Ek=1000*400/2
Ek=400000/2
Ek= 200000 J= 200 kJ
Zadanie 2
P=W/t
t=W/P
t=50/10000
t=0,005 h