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m=2kg
Ep=0,4kJ = 400J
g=10m/s²
Szukane:
h=?
Ep=mgh /:mg
h=Ep/mg
h=400kgm²/s² / 2kg * 10m/s² = 20m
Ciało o masie 2kg znajduje się na wysokości 20m.
m=2kg
Ep=0.4
0.4KJ=2kg *(razy) 10 *h
0.4=20/0.4
h=50