1. The problem statement, all variables and given/known data Some aircraft are capable of accelerations of magnitude 42.5 m/s2. If an aircraft starts from rest, how long will it take the aircraft to travel down the 2.6-km runway? 2. Relevant equations d= vi(t) - 1/2 a(t)2 I am assuming that you need to solve for t. I had trouble altering the equation to do that. 3. The attempt at a solution since velocity initial is 0m/s, I keep getting divide by zero error, and I get a cube root.