2. Dynamics
Friction — Quiz
Test your understanding of friction with 5 practice questions.
Practice Questions
Question 1
Which type of friction acts on an object that is NOT moving?
Question 2
A block of wood is resting on a horizontal surface. A force of $10 \text{ N}$ is applied horizontally, but the block does not move. If the coefficient of static friction is $0.5$ and the normal force is $30 \text{ N}$, what is the maximum static friction force?
Question 3
What happens to the kinetic friction force acting on an object if its speed increases, assuming the coefficient of kinetic friction and normal force remain constant?
Question 4
A box with a mass of $5 \text{ kg}$ is sliding across a floor. If the coefficient of kinetic friction between the box and the floor is $0.2$, what is the kinetic friction force acting on the box? (Assume $g = 9.8 \text{ m/s}^2$)
Question 5
Which of the following factors does NOT significantly affect the magnitude of kinetic friction between two surfaces?