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m = 0,5 kg
h = 5 m
v = 10 m/s
Em = Ep + Ek
Ep = m.g.h
= 0,5.10.5
= 25 J
Ek = 1/2.m.v2
= 1/2.0,5.102
= 1/2.0,5.100
= 1/2.50
= 25 J
Em = 25 + 25
= 50 J