1. The problem statement, all variables and given/known data Speedy sue, driving at 30.0m/s enters a one lane tunnel. She then observes a slow-moving van 155m ahead traveling at 5.00m/s. Sue applied her breaks and accelerates at -2.00 m/s^2. Will there be a collision? If yes, at what distance and what time? 2. Relevant equations initial v = 30 m/s final v = 0 a = -2/s^2 displacement = [(final velocity - initial velocity) / 2*acceleration)] 3. The attempt at a solution By using the above equation, I found out that a crash does occur when Sue stops. However, I do not understand how to find out at exactly what displacement this crash occurs.