Homework Help: mathematics

Posted by Julia on Saturday, April 14, 2007 at 11:14am.

A car braked with a constant deceleration of 45ft/s^2 producing skid marks measuring 55 ft before coming to a stop. How fast was the car traveling when the brakes were first applied? Please round the answer to the nearest hundredth.

Vo= ft/s

Vintial^2 - Vfinal^2= -2*acceleration*distance

Vfinal is zero. deacceleration is negative acceleration in the problem statement

thanks a bunch

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