Use the Picture A A A C Study each car's position in A ture to the right. B Write the letter of the car th It matches each statement. B 1. Stopping distance increases. C 2. Speed increases without accelerating. 3. The vehicle's center of gravity is raised. 4. Speed decreases without deceleration. 5. The force of gravity causes speed to decrease. 6. Driver has the best clear line of sight ahead and to the rear. 7. Driver might need to accelerate to maintain speed. 8. Driver has the greatest line-of-sight restriction. Check Roadways and Tires % % % Place a check by each of the following items that result in good traction. I. Tee-covered roadway 6. Bald tires 1. Loose-packed gravel roadway 7. Overinflated tires 3. Dry, smooth roadway 8. Dry, bumpy roadway 4. Snow tires on snow-covered roadway 9. Underinflated tires 5. Roadway covered with rain 10. Tires with wide. deep tread on snow- wowvered roadway Use the Picture Study pictures A, B, and C and answer the questions below about the effects of gravity and speed on vehicles. Weight: 40,000 pounds Weight: 7,000 pounds Weight: 3.000 pounds A B C 1. Gravity has the greatest effect on the vehicle shown in picture 2. The center of gravity has been raised on the vehicle shown in picture 3. If all three vehicles are traveling at the same speed, is vehicle C's energy of motion more than or less than that of vehicles A or BY- 4. When going uphill, will the force of gravity decrease or increase cach vehicle's speed? 5. Assume all three vehicles are traveling at 55 mph. They are the same distance from a roadway barrier. Which vehicle will hit the barrier with the greatest force of impact? 34 Chapter 9 Natural Laws and Car Control Unit 3 Controlling Your Vehicle