A body of mass 40kg resting on a rough horizontal surface is subjected to a force `P` which is just enough to start the motion of the body. If `mu_(s)=0.5mu_(k)=0.4 , g=10ms^(-2)` an dthe force `P` is continuously applied on the body, then the accceleration of the body is.

Options

A. zero
B. `1 m//s^(2)`
C. `2 m//s^(2)`
D. `2.4 m//s^(2)`

Answer

B