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DISTANCE TRAVELED BY A CAR ACCORDING TO THE CAR’S SPEED

游客2024-01-12  45
问题         DISTANCE TRAVELED BY A CAR ACCORDING TO THE CAR’S SPEED
                WHEN THE DRIVER IS SIGNALED TO STOP

*Reaction time is the time period that begins when the driver is signaled to stop and ends when the driver applies the brakes.
Note: Total stopping distance is the sum of the distance traveled during reaction time and the distance traveled after brakes have been applied. [br] Approximately what is the total stopping distance, in feet, if the car is traveling at a speed of 40 miles per hour when the driver is signaled to stop?
选项 A、130
B、110
C、90
D、70
E、40
答案 A
解析 Since the total stopping distance is the sum of the distance traveled during reaction time and the distance traveled after the hrakes have been applied, you need information from both graphs to answer this question. At a speed of 40 miles per hour, the distance traveled during reaction time is a little less than 45 feet, and the distance traveled after the brakes have been applied is 88 feet. Since 45 + 88 = 133, the correct answer is Choice A.
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