Problem
How long ( second unit) does it take an object to travel a distance of \( 54 \mathrm{~m} \) from rest at a constant acceleration of \( 2 m / s^{2} \)
Solution
Step 1 ：d = \frac{1}{2}at^{2}
Step 2 ：54 = \frac{1}{2}(2)t^{2}
Step 3 ：t = \sqrt{27}
