4. How can you best reduce friction between the bottom or feet of furniture and the
A by smoothing the floor
B by keeping furniture on their place
C by applying lubricants like wax on the floor
D. by puting wheels or rollers on the bottom or feet of fumiture
5. Which shows that friction is undesirable?
A pushing fumiture
Blighting a matchstick
C walking on wet floors
Dusng the breaks when approaching a stoplight
6. Which of the following statements is true?
A Friction makes an object slide
C. Gravity pushes an object upward.
B.Force is needed to stop an object D An object in motion will remain in motion
7. What can be done to increase the friction between two objects?
A make surface of one object smoother
B. put water in between the two objects
C. decrease the force pressing the two objects together
D. increase the force pressing the two objects together
8. What is the type of friction that is important to walking?
A air friction
C. sliding friction
B static friction
D. fluid friction
9. You want to comb your hair smoothly, what oil product will you use?
A palm oil B. motor oi
C. baby oil
10. Matthew's car had engine trouble while going up in an inclined plane. As he
repaired the engine, he put rocks at the back wheels to stop the car from moving
What force prevent the car from moving?
A friction
B. gravity
C. magnetic
D. weight​