4. how can you best reduce friction between the bottom or feet of the furniture and the floor. A.by smoothing the floor B.by keeping furniture on their place C.by applying lubricants like wax on the floor D.by putting wheels or rollers on their bottoms are fit of the furniture
5.which shows that friction is undesirable? A.pushing furniture B.walking on wet floors C.lighting a matchstick D.using the brakes when approaching a stop light
6.what are you going to put in a surface to reduce the friction on it? A.stone B.piece of cloth C.lubricant D.none of the above
7.why is it easy to slip when there is water on a smooth floor. A.the water is a lubricant and reduces the friction between your feet and the floor B.the friction between your feet and the floor changes from kinetic to static friction C.the water increases the friction between your feet and the floor D.the friction between your feet and the floor changes from sliding
