An army vehicle of mass $1000\, kg$ is moving with a velocity of $10 \,m/s$ and is acted upon by a forward force of $1000\, N$ due to the engine and a retarding force of $500 \,N$ due to friction. ........... $m/s$ will be its velocity after $10\, s$

  • A

    $5$

  • B

    $10$

  • C

    $15 $

  • D

    $20 $

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  • [JEE MAIN 2021]