7. Friction, Inclines, Systems

Kinetic friction acts on a moving object sliding across a surface. How does kinetic friction affect the speed of the object over time?

Which of the following scenarios best demonstrates kinetic friction?

What is the primary cause of kinetic friction between two surfaces in contact?

Pushing a 10-kg toolbox across the floor, you find that the box moves at a constant speed when you push horizontally with a force of 39 N. What is the coefficient of kinetic friction between the floor and the toolbox?

As you push a cereal box across a tabletop, the sliding friction acting on the cereal box

You push on a 3-kg box to give it an initial speed of 5 m/s across a floor. If μ_k = 0.3, how far does the box travel before coming to a stop?