Answer:
[tex]V=\dfrac{m_1s}{m_2+M}[/tex]
Explanation:
As we know that if there is no any external force on the system then the linear momentum of system will remain conserve.
Linear momentum P= m .v
If F(net) = 0 [tex]P_i=P_f[/tex]
Given that velocity of first person is s .
Form conservation of momentum
Let V is the final velocity
Initial momentum = [tex]m_1.s[/tex]
Final momentum =[tex](m_2+M)V[/tex]
[tex]m_1s=(m_2+M)V[/tex]
[tex]V=\dfrac{m_1s}{m_2+M}[/tex]