cdrosss1214 cdrosss1214

12-02-2017
Physics

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The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with an acceleration of -5.60 m/s2 for 4.20 s, making straight skid marks 62.4 m long ending at the tree. With what speed does the car then strike the tree

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morganj morganj

12-02-2017

the equation for speed is s=d÷t the distance=62.4m and the time=4.20s so 62.4÷4.20= 14.857

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