Question 737205
{{{mv+Mv=(m+M)u}}}


{{{mv+Mv=mu+Mu}}}


{{{mv+Mv-mu=Mu}}}


{{{mv-mu=Mu-Mv}}}


{{{m(v-u)=Mu-Mv}}}


{{{m=(Mu-Mv)/(v-u)}}}


{{{m=(-M(v-u))/(v-u)}}}


{{{m=-M}}}


Final Answer: {{{m=-M}}}