$s = v_it + \frac{1}{2}at^2$ where $v_i = 0$

Thus

$s = \frac{1}{2}at^2$

**English Units** |
**SI Units** |

$1 = \frac{1}{2}a(8^2)$
$a = 0.03125 \, \text{ ft/sec}^2$
$625 = \frac{1}{2}(0.03125)t^2$
$t = 200 \, \text{ sec}$
$t = 3 \, \text{ min } 20 \, \text{ sec}$ *answer* |
$0.3048 = \frac{1}{2}a(8^2)$
$a = 0.009\,525 \, \text{ m/sec}^2$
$190.5 = \frac{1}{2}(0.009\,525)t^2$
$t = 200 \, \text{ sec}$
$t = 3 \, \text{ min } 20 \, \text{ sec}$ *answer* |