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m = 0,5 kg
h = 100 m
v = 10 m/s
g = 10 m/s^2
szukane:
E = ?
Rozwiązanie
E = Ep + Ek
Ep = m*g*h = 0,5kg * 10m/s^2 * 100m = 500 J
Ek = mv^2/2 = 0,5kg * (10m/s)^2/2 = 25 J
E = 500 J + 25 J
E = 525 J
h=s=100m
v=10m/s
g=10m/s²
Ek=(m*v²)/2
Ek= 0,5kg*100m/s² /2
Ek=25 J
Ep=m*g*h
Ep=0,5kg*10m/s²*100m
Ep=500 J
Em=Ek+Ep
Em=25J +500J
Em=525J
Ek- energia kinetyczna
Ep- energia potencjalna
Em- energia mechaniczna
Pozdrawiam :)