A particle is moving in a circle with uniform speed $v$. In moving from a point to another diametrically opposite point

  • A

    The momentum changes by $mv$

  • B

    The momentum changes by $2mv$

  • C

    The kinetic energy changes by $(1/2)mv^2$

  • D

    The kinetic energy changes by $ mv^2$

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  • [KVPY 2019]