A space craft of mass $M$ is moving with velocity $V$ and suddenly explodes into two pieces. A part of it of mass m becomes at rest, then the velocity of other part will be
$\frac{{MV}}{{M - m}}$
$\frac{{MV}}{{M + m}}$
$\frac{{mV}}{{M - m}}$
$\frac{{(M + m)V}}{m}$
A space craft of mass $M$ is moving with velocity $V$ and suddenly explodes into two pieces. A part of it of mass m becomes at rest, then the velocity of other part will be
After explosion m mass comes at rest and let Rest $(M - m)$ mass moves with velocity $v.$
By the law of conservation of momentum $MV = (M - m)v$ $⇒$ $v = \frac{{MV}}{{(M - m)}}$