1. The problem statement, all variables and given/known data - A Dragster at the starting line accelerates at 8 m/s^2 to the finish line. If it took 4.6 s, how long is the track? - The Dragster deccelerated to a stop in 100m. How long did it take? 2. Relevant equations x = 0 + 1/2at^2 3. The attempt at a solution The first part of the questions I got x = 84.64m using the above equation. For the life of me, I cannot figure out how to get anything viable for other formulas, when v or a is not specified for decceleration (read: Part 2).