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v=6m/s
Ek=?
E=2*36/2(kg*m/s2*m)=N*m=J)
Ek=36J
m=2 kg Ek=?
v=6m/s
Ek=m*v²/2
Ek=2 kg * 6² m/s /2
Ek= 2 kg * 36 m/s /2
Ek= 72 J /2
Ek= 36 J (dżuli)
energia kinetyczna ciała wynosi 36 J.