Posted by Oterhia on Saturday, September 1, 2012 at 2:44pm.
The law of conservation of linear momentum
mv=(m+M)u
The law of conservation of energy
u =mv/(m+M) = 0.01•100/(0.99+0.01)= 1 m/s.
(m+M)u²/2 =(m+M)gh
h= u²/2•g=1/2•9.8=0.05 m
mv²/2- (m+M)u²/2 = 0.01•10000/2 - 1•1/2 = 50-0.5=49.5 J
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