A big ball of mass $M$, moving with velocity $u$ strikes a small ball of mass $m$, which is at rest. Finally small ball obtains velocity $u$ and big ball $v$. Then what is the value of $v$
A big ball of mass $M$, moving with velocity $u$ strikes a small ball of mass $m$, which is at rest. Finally small ball obtains velocity $u$ and big ball $v$. Then what is the value of $v$
$\frac{{M - m}}{{M }}u$
$\frac{m}{{M + m}}u$
$\frac{{2m}}{{M + m}}u$
$\frac{M}{{M + m}}u$
A big ball of mass $M$, moving with velocity $u$ strikes a small ball of mass $m$, which is at rest. Finally small ball obtains velocity $u$ and big ball $v$. Then what is the value of $v$
By momentom conservation,
$Mu = Mv + mu$
$v =\frac{( M - m ) u }{ M }$