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m = 50 kg
g = 10 m/s2
Ep = 12 kj = 12 000 J
Ep = mgh
12 000 = 50 x 10 x h
12 000 = 500 x h / 500
24 = h
h= 24 m
Odp: Energia potencjalna człowieka ważącego 50 kg wyniesie 12 kj na wysokości 24 m
Odp : 24 metry