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V = 20 m/s
m = 3 kg
Rozw.:
Ek = m × V² / 2 = 3 kg × (20 m/s)² / 2 = 600 J
m=3kg
v=20 m/s
Ek=?
wzór:
Ek= 1/2 mv^2
Ek= 1/2 * 3 kg * 400m2/s2 [kg *m2/s2 = J]
Ek=600 J
Odp.Te ciało ma energię 600 J.