A bullet moving with a uniform velocity v, stops suddenly after hitting the target and the whole mass melts be $m$, specific heat $S,$ initial temperature $25°C$ melting point $ 475°C$ and the latent heat $L.$ Then $v$ is given by
A bullet moving with a uniform velocity v, stops suddenly after hitting the target and the whole mass melts be $m$, specific heat $S,$ initial temperature $25°C$ melting point $ 475°C$ and the latent heat $L.$ Then $v$ is given by
- A
$mL = mS\,(475 - 25) + \frac{1}{2} \cdot \frac{{m{v^2}}}{J}$
- B
$mS(475 - 25) + mL = \frac{{m{v^2}}}{{2J}}$
- C
$mS\,(475 - 25) + mL = \frac{{m{v^2}}}{J}$
- D
$mS\,(475 - 25) - mL = \frac{{m{v^2}}}{{2J}}$
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