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Normal - peso = 0
N=mg=15(10) N=150 newton
sumas de fuerzas horizontales
F - Fr = ma
F - Mc.N = ma
60 - 0.2 (150) = 15a
30=15a
a= 2 m/s.s aceleración del bloque
t=3seg
V=Vo+at
V=0+2(3)
V= 6 m/s velocidad final del bloque