1. The problem statement, all variables and given/known data Determine the stopping distances for a car with an initial speed of 85 km/h and human reaction time of 1.0 s for the following accelerations. (a) a = -4.0 m/s2 m (b) a = -8.0 m/s2 m 2. Relevant equations d=v1+v2/2 *t a=change in velocity/time 3. The attempt at a solution I converted 85kh/h into 23.61m/s I found how many seconds in each instance (a) 5.9s...I did -4=(0-23.61)/t solved for t (b)2.95s...same as a using these times I used (23.61+0)/2 *Time then added 1 for the reaction delay I got (a)=82 and (b)=47 What am I doing wrong?