1. The problem statement, all variables and given/known data Airplane A, starting from rest with constant acceleration, requires a runway 600m long to become airborne. Airplane B requires a takeoff speed twice as great as that of airplane A, but has the same acceleration, and both planes start from rest. 2. Relevant equations a.) How long must the runway be, in meters, for airplane B? b.) If airplane A takes time T to travel the length of it runway, how long (in terms of T) will airplane B take to travel the length of its runway? 3. The attempt at a solution I tried multiplying the 600m runway by 2 to get the runway length for airplane B, but that answer is incorrect, I am not sure how to find the length of the runway with the information given in the problem.