1. The problem statement, all variables and given/known data A particle moving at 5m/s reverses its direction in 1 s to move at 5m/s in the opposite direction. If its acceleration is constant, what distance does it travel? 2. Relevant equations x=vot+0.5at^2; a=(vf-vi)/t 3. The attempt at a solution total time is 1s therefore acceleration is 10m/s^2 and then i'm stuck because when I input the value into the equation I'm not getting the answer of 2.5m which is the correct answer.