A bullet of mass $m$ moving with velocity $v$ strikes a block of mass $M$ at rest and gets embedded into it. The kinetic energy of the composite block will be
A bullet of mass $m$ moving with velocity $v$ strikes a block of mass $M$ at rest and gets embedded into it. The kinetic energy of the composite block will be
- A
$\frac{1}{2}m{v^2} \times \frac{m}{{(m + M)}}$
- B
$\frac{1}{2}m{v^2} \times \frac{M}{{(m + M)}}$
- C
$\frac{1}{2}m{v^2} \times \frac{M+m}{{(M)}}$
- D
$\frac{1}{2}m{v^2} \times \frac{2m}{{( M+m)}}$
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$(II)$ Kinetic energy of the system $(R$ & $S)$ is minimum at $t = 2$ milli sec.
$(III)$ The mass of $R$ was greater than mass of $S.$
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$(II)$ Kinetic energy of the system $(R$ & $S)$ is minimum at $t = 2$ milli sec.
$(III)$ The mass of $R$ was greater than mass of $S.$
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