A block of mass $1\,kg$ lies on a horizontal surface in a truck. The coefficient of static friction between the block and the surface is $0.6$ . If the acceleration of the truck is $5\,m\,s^{-2}$ . The frictional force acting on the block is ........ $N$ 

  • A

    $10$

  • B

    $5$

  • C

    $2.5$

  • D

    $20$

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  • [JEE MAIN 2014]