A block of mass `m=5kg` is resting on a rough horizontal surface for which the coefficient of friction is `0.2` . When a force `F=40N` is applied, the acceleration of the block will be `(g=10m//s^(2))` .
A. `5.73m//sec^(2)`
B. `8.0m//sec^(2)`
C. `3.17m//sec^(2)`
D. `10.0m//sec^(2)`
