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Pozdrawiam, Adam
v = 4 m/s
g = 10 m/s2
szukane:
h = ?
Z zasady zachowania energii:
Ep = Ek
mgh = mv^2/2 /:m
gh = v^2/2 I*2
2gh = v^2 /:2g
h = v^2/2g
h = (4m/s)^2/(2 *10m/s^2) = 16/20 m
h = 0,8 m