Physics

Problem

a. A

2\,\text{kg}

block lies on a horizontal surface with

\mu_s = 0.30

and

\mu_k = 0.25

. A horizontal force of

8\,\text{N}

acts on it for

3\,\text{s}

. Determine the block’s acceleration while the force acts. b. Find the speed of the block at the end of

3\,\text{s}

. c. Immediately after

t = 3\,\text{s}

the force is removed. How much additional time elapses before the block comes to rest?