1.

A body of mass 60 kg is dragged with just enough force to start moving on a rough surface with coefficients of static and kinetic frictions 0.5 and 0.4 respectively. On applying the same force, what is the acceleration?

A.  \[0.\text{98 m}/{{\text{s}}^{\text{2}}}\]  
B.  \[\text{9}.\text{8 m}/{{\text{s}}^{\text{2}}}\]
C.  \[0.\text{54 m}/{{\text{s}}^{\text{2}}}\]
D.  \[\text{5}.\text{292 m}/{{\text{s}}^{\text{2}}}\]
Answer» B.  \[\text{9}.\text{8 m}/{{\text{s}}^{\text{2}}}\]


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