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5-8 DRIVING SAFETY DATA

5-8 DRIVING SAFETY DATA. OBJECTIVES. Calculate reaction time and distance in the English Standard System. Calculate and use the braking distance in both the English Standard and Metric Systems. Calculate and use the total stopping distance in both the English Standard and Metric Systems.

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5-8 DRIVING SAFETY DATA

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  1. 5-8DRIVING SAFETY DATA OBJECTIVES Calculatereaction time and distance in the English Standard System. Calculate and usethe braking distance in both the English Standard and Metric Systems. Calculate and usethe total stopping distance in both the English Standard and Metric Systems.

  2. Key Terms • reaction time • thinking time • reaction distance • braking distance • total stopping distance

  3. Example 1 What is the reaction distance for a car traveling approximately 48 miles per hour?

  4. Conservative Rule for Reaction Distance: A car travels about one foot for each mile per hour of speed.

  5. CHECK YOUR UNDERSTANDING A car is traveling at 65 mi/h. Approximately how far will it travel during the average reaction time?

  6. Example 2 What is the approximate braking distance for a car traveling at 48 mi/h?

  7. CHECK YOUR UNDERSTANDING What factors also need to be taken into account that might add to or subtract from the braking distance?

  8. EXAMPLE 3 Rachel is driving at 48 mi/h on a one-lane highway. She sees an accident directly ahead of her about 200 feet away. Will she be able to stop in time?

  9. EXAMPLE 4 Desireé is traveling through Canada. The speedometer in her rented car indicates kilometers per hour and all of the road signs give distances in kilometers. Determine Desireé’s total stopping distance if she is traveling 88 kilometers per hour.

  10. EXTEND YOUR UNDERSTANDING Toni’s car is traveling 75 km/h. Toni notices a family of ducks crossing the road 50 meters ahead of her. Will she be able to stop before she reaches the ducks?

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