Zad. 3
Ep = mgh
Względem podłogi:
Ep = 3kg · 10 · 0,5m = 15J
Względem ziemi:
h = 3m + 0,5m = 3,5m
Ep = 3kg · 10 · 3,5m = 105J
Zad.4
Ek = / · 2
2Ek = / :
m =
0,5kJ = 500J
m = = = 10kg
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Zad. 3
Ep = mgh
Względem podłogi:
Ep = 3kg · 10
· 0,5m = 15J
Względem ziemi:
h = 3m + 0,5m = 3,5m
Ep = 3kg · 10
· 3,5m = 105J
Zad.4
Ek =
/ · 2
2Ek =
/ : 
m =
0,5kJ = 500J
m =
= 
= 10kg