A particle of mass $m$ moving horizontally with $v_0$ strikes $a$ smooth wedge of mass $M$, as shown in figure. After collision, the ball starts moving up the inclined face of the wedge and rises to $a$ height $h$. Choose the correct statement(s) related to particle $m$ 

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  • A

    Its kinetic energy is $K_f = \left( {\frac{{mM}}{{m + M}}} \right)gh$

  • B

    $v_1 = v_0 \left( {\frac{{M - m}}{{M + m}}} \right)$

  • C

    The ratio of its final kinetic energy to its initial kinetic energy is $\frac{{{K_{\text{f}}}}}{{{K_i}}} = {\left( {\frac{M}{{m + M}}} \right)^2}$

  • D

    It moves opposite to its initial direction of motion

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