Calculus Antiderivative Problem

A car traveling at 46 mph decelerates at 21 feet per second per second.

a). How long does it take for the car to come to a complete stop?
b). What distance is required to bring the car to a complete stop? An

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asked by Claire
  1. convert 46 mph to ft/s. If that value is c, then

    v = c-21t
    solve for t when v=0

    the distance s is

    s = ct - 10.5 t^2

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    posted by Steve
  2. -51.6

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    posted by Anonymous
  3. 5t

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    2. 0
    posted by Anonymous

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