Wyjaśnienie:
Ek = 1/2 × m × V^2
25J = 1/2 × 2kg × V^2
V^2 = 25J/kg
V = 5m/s
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Wyjaśnienie:
Ek = 1/2 × m × V^2
25J = 1/2 × 2kg × V^2
V^2 = 25J/kg
V = 5m/s