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F is During a collision when an average stopping force exerted on a car by an obstacle, the cars bumper retracts a distance Ar. These two quantities are related by the equation FA 0.5mv
Use propartional reasoning to determine the necessary percent change in the retraction distance so that the average force required to stop a car is reduced by 47%. Express your answer as a percentage. Enter positive value if the distance increases and negative value if the distance decreases. The percent change- Submit Part B Use proportional reasoning to determine the percent change in initial to final speed that would produce the same reduction in force answer as a percentage. Enter positive value if the speed increases and negative value if the speed decreases
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Answer #1

leo Ft. F, .-4. ラ Fi S 3 S 3 Fi 10 G 91 91 か - 一21.2%

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