How fast was the car traveling when the brakes were first applied?

A car braked with constant deceleration of 40ft/sec squared, producing skid marks measuring 160ft before coming to a stop. How fast was the car traveling when the brakes were first applied?How fast was the car traveling when the brakes were first applied?v^2 - (vo)^2 = 2ax

0 - (vo)^2 = 2(-40 ft/s^2)(160 ft)

vo = 113 ft/s

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