B. rolling friction
D. static friction
8. How can you best reduce friction between the bottom or feet of furniture and the
floor?
A. by smoothing the floor
B. by keeping furniture on their place
C. by applying lubricants like wax o the floor
D. by putting wheels or rollers on the bottom or feet of furniture
9.Which of the following statement is true ?
A. Friction makes an object slide.
B. Gravity pushes an object upward.
C. Force is needed to stop object.
D. An object in motion will remain in motion.
10. Which of the following is an example of increasing friction?
A. polishing the floor
C. squirting oil into the door hinge
B. spreading sand on a wet floor D waxing the underneath of ice skates​