I have just started a calculus book, and I cant figure out how to solve this problem:(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

The landing velocity of an airplane (i.e., the velocity at which it touches the ground) is 100 mi/hr. It decelerates at a constant rate and comes to a stop after traveling 1/4 mile along a straight landing strip. Find the deceleration or negative acceleration.

2. Relevant equations

3. The attempt at a solution

a = x

v = xt + C

v = xt + 100

s = (x/2)t^2 + 100t + C

1/4 = (x/2)t^2 +100t

I'm not sure what to do next.

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# Find deceleration from distance and initial velocity

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