Force acting on a block versus time graph is as shown in figure. Choose the correct options. (Ta...

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Force acting on a block versus time graph is as shown in figure. Choose the correct options. (Take, \( g=10 \mathrm{~ms}^{-2} \) )
(a) At \( t=2 \mathrm{~s} \), force of friction is \( 2 \mathrm{~N} \)
(b) At \( t=8 \mathrm{~s} \), force of friction is \( 6 \mathrm{~N} \)
(c) At \( t=10 \mathrm{~s} \), acceleration of block is \( 2 \mathrm{~ms}^{-2} \)
(d) At \( t=12 \mathrm{~s} \), velocity of block is \( 8 \mathrm{~ms}^{-1} \)
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