Question

When a driver presses the brake pedal, his car stops with an acceleration of -8.7 m/s2. How far will the car travel while coming to a complete stop if its initial speed was 10 m/s?

Answer 1

It takes the car 10/8.7 = 1.149 seconds to stop

s = 10t - 4.35t^2
so plug in t = 1.149 to find the distance

Answer 2

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