Question

the distance of D in feet it takes a car traveling at x mph to come to a full stop after hitting the brakes is given by d= 1.26x^2+ .075x. Est. the stopping distance for a car traveling at 40 mph
Substitute 40 for x and solve.
Please help! Car traveling at 35 MPH traveling 900'...how long to stop?

Car traveling at 90 MPH traveling 900'...what is the difference on impact????

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