1.

A force produces an acceleration of \[5.0\,\,cm\,\,{{s}^{-2}}\] when it acts on a body of mass\[20\,\,g\]. Find the force acting on the body.

A. \[1\times {{10}^{-3}}N\]            
B.        \[2\times {{10}^{-3}}N\]
C. \[4\times {{10}^{-3}}N\]          
D.        \[5\times {{10}^{-3}}N\]
Answer» B.        \[2\times {{10}^{-3}}N\]


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