A chair is pushed forward with a horizontal force of 185 N. There is a 47 N frictional force, the gravitational force of Earth on the chair is 155 N downward, and the floor exerts a force of 155 N upward on the chair. How far will the chair be pushed in 1.75 s?

A12-g wad of sticky clay is hurled horizontally at a 100-g wooden block initially at rest on a horizontal surface. the clay sticks to the block. after impact, the block slides 7.5 m before coming to rest. if the coefficient of friction between the block and the surface is 0.65, what was the speed of the clay immediately before the impact?