Two seconds after projection a projectile is travelling in a direction inclined at $30^o$ to horizontal, after one more second it is travelling horizontally. What is the magnitude and direction of its velocity at initial point 

  • A

    $20\sqrt {3\,} \,\,m/s\,,\,\,{30^o}$

  • B

    $20\sqrt {3\,} \,\,m/s\,,\,\,{60^o}$

  • C

    $10\sqrt {3\,} \,\,m/s\,,\,\,{30^o}$

  • D

    $10\sqrt {3\,} \,\,m/s\,,\,\,{60^o}$

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