A sphere of mass $m$, moving with velocity $V$, enters a hanging bag of sand and stops. If the mass of the bag is $M$ and it is raised by height $h$, then the velocity of the sphere was
A sphere of mass $m$, moving with velocity $V$, enters a hanging bag of sand and stops. If the mass of the bag is $M$ and it is raised by height $h$, then the velocity of the sphere was
- A
$\frac{{M + m}}{m}\sqrt {2gh} $
- B
$\frac{M}{m}\sqrt {2gh} $
- C
$\frac{m}{{M + m}}\sqrt {2gh} $
- D
$\frac{m}{M}\sqrt {2gh} $
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