The force F, acting in a constant direction on the 20-kg block, has a magnitude which va...

The force F, acting in a constant direction on the 20-kg block, has a magnitude which varies with position s of the block. Determine the speed of the block after it slides 3 m. When s = 0 the block is moving to the right at 2 m/s. The coefficient of kinetic friction between the block and surface is μ_k = 0.3.