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the driver of the truck going 50 mph applies the brakes giving the truck a deceleration of 4.5 m/s^2 how long will it take the truck to come to a complete stop what distance will it cover

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50mi/hr = 22.35m/s

22.35m/s / 4.5m/s^2 = 4.97s

Now just plug in for distance:

s = vt - 1/2 at^2

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