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February 28, 2015

February 28, 2015

Posted by **shawn** on Wednesday, July 18, 2012 at 2:36am.

- physics -
**Elena**, Wednesday, July 18, 2012 at 3:08amm1•v =(m1+m2)u,

u=m1•v/(m1+m2).

(m1+m2)u²/2=kx²/2,

x=u•sqrt[(m1+m2)/k}=

= m1•v•sqrt[(m1+m2)/k}/(m1+m2)=

=m1•v/sqrt[k•(m1+m2)]=

=0.005•1000/sqrt[20(2+0.005)]=3.53 m.

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