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V = 20 m/s
Rozw.
V = √2gh
h = V²/2g = (20[m/s])² / 2 × 10[m/s]² = 20 m
V=20 m/s
g=10m/s²
---------------------
s=?
V=g*t |:g
t=V/t
t=20 m/s /10m/s²
t=2 s
s=gt²/2
s=10m/s²*(2 s)² /2
s=10m/s²*4 s /2
s=40/2
s=20 m
odp.Ciało spada z wysokości 20 m.