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5.work,energy,power and collision — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics5.work,energy,power and collision1 Mark
MCQ
An ice block is melting at a constant rate $\left| {\,\frac{{dm}}{{dt}}\,} \right|= \mu$ . Its initial mass is $m_0$ and it is moving with velocity on a frictionless horizontal surface. The distance travelled by it till it melts completely is :
  • A
    $\frac{{2{m_0}v}}{\mu }$
  • ✓
    $\frac{{{m_0}v}}{\mu }$
  • C
    $\frac{{{m_0}v}}{{2\mu }}$
  • D
    can’t be said
✓

Answer

Correct option: B.
$\frac{{{m_0}v}}{\mu }$
b
$P i=m_{0} v$

$\left(x=\frac{m_{0} v}{\mu}\right)$

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