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m = 40 kg
v = 30m/s
Szukane :
Ek = ?
Rozwiązanie :
Ek = 1/2 m * v²
Ek = 1/2 * 40 * 30²
Ek = 18 000 J = 18 kJ
m=40kg
V=30m/s
Szuk. Ek=?
Roz.