Physics

Problem

4\,\text{kg}

block rests on a rough horizontal surface with coefficients

\mu_s = 0.50

and

\mu_k = 0.40

. A horizontal force of

18\,\text{N}

is applied. Take

g = 9.8\,\text{m/s}^2

. The acceleration of the block is a)

0.58\,\text{m/s}^2

0.45\,\text{m/s}^2

0\,\text{m/s}^2

1.16\,\text{m/s}^2