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A block of mass 10 kg is moving on a rou...

A block of mass `10 kg` is moving on a rough horizontal surface as shown in figure. At `t=0`, velocity of block is `10 m/s` towards left and a constant force `F= 10 N` acts horizontally towards right. Acceleration of the block at `t=3s` is (`g= 10 m s^(-2)`)

A

`5 ms^(-2) `

B

`4 ms^(-2) `

C

Zero

D

`3ms^(-2)`

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