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Ep1 = Ep2 + Ek
m.g.h1 = m.g.h2 + 1/2.m.v^2 (bagi m kedua ruas)
g.h1 = g.h2 + 1/2.v^2
10.h1 = 10.6 + 1/2.10^2
10h1 = 60 + 50
10h1 = 110
h1 = 110:10
h1 = 11 m
Jawaban: C