of the correct answer. 1. Which surface will produce the least amount of friction? a. fuzzy soccer field b. smooth glass tabletop c gravel running track d. grassy soccer field 2. Which of the following does not involve any friction? a. a bicycle rolling down a hill c. a diver falling through the air to a pool b. a baseball player sliding into second base d, all of the above experience friction 3. Why is it easy to slip when there is water on a smooth floor? a. Tthe 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 4. These two factors determine the strength of the force of friction a. speed and light c. how big the objects are and how hard you push them b. how fast the objects are going and on what planet d. how hard the surfaces push togetehr and the types of surfaces involved 5. Which of the following is not a type of friction? a. fluid b. static C. rolling d. wind 6. What are you golong to put in a surface to reduce the friction on it? a, stone b. lubricant c piece of cloth d. none of the above 7. If you run down the sidewalk and stop quickly, you can stop because of the between your shoes and the cement a. gravity b. motion c. Friction d. Shoes 8. Occurs when two objects rub againts each other. It is a force that slows down or stops objects. a. motion b. friction c. Gravity d. push or pull 9. Which of the followings helps in reducing friction? a. lubricants, rollers, wheels and bearings C. gravel, sand, soil b. cloth, clay, rubber d. pebbles, rocks, mud 10. What will hapeen if we don't have friction? a. Life would be very easy. c. We can walk easily. c. We will float. d. We can't walk.
