Answer
$t\approx12.7s$
Work Step by Step
We know the following equation:
$x=\frac{1}{2}at^{2} \\\\ t=\sqrt{\frac{2x}{a}}$
We plug in the known values to obtain:
$t=\sqrt {\frac{2(250m)}{(3.09m/s^{2})}}\approx12.7s$
Fundamentals of Physics Extended (10th Edition)
by Halliday, David; Resnick, Robert; Walker, Jearl
Published by
Wiley
ISBN 10:
1-11823-072-8
ISBN 13:
978-1-11823-072-5
Chapter 2 - Motion Along a Straight Line - Problems - Page 37: 77c
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